WEST SYSTEM 737-20 Fiberglass & Repair This high-performance biaxial fiberglass fabric is engineered for applications demanding exceptional multi-directional strength, impact resistance, and structural integrity. The 50-inch width and 20-yard length provide substantial coverage for large-scale professional marine construction and repair projects where superior strength-to-weight performance is critical. Advanced Biaxial Construction: Unlike traditional woven fabrics, where fibers cross over and under each other, biaxial fabric features two layers of fibers oriented at ±45° angles, held together by light stitching. This non-crimped construction keeps fibers straight and flat, resulting in higher strength, superior stiffness, and significantly reduced print-through compared to woven materials. Multi-Directional Strength: The ±45° fiber orientation provides outstanding strength in multiple directions, making biaxial fabric ideal for structural applications where loads come from various angles. This configuration delivers excellent resistance to torsional stress, impact, and flexing—critical performance characteristics for hull bottoms, high-stress panels, and structural components subjected to real-world marine conditions. Superior Surface Quality: The flat, non-crimped fibers create laminates with minimal surface texture and reduced print-through. This means less fairing and finishing work compared to traditional woven fabrics, saving time and labor while producing a smoother, more professional surface ready for gelcoat, paint, or secondary bonding operations. Key Benefits: Exceptional Strength: Non-crimped fibers deliver higher strength than woven fabrics Multi-Directional Performance: ±45° orientation provides strength in multiple directions Superior Stiffness: Straight fibers create stiffer laminates for structural applications Reduced Print-Through: Flat construction minimizes surface texture Excellent Impact Resistance: Absorbs shock and flexing without delamination Wide Coverage: 50-inch width minimizes seams on large panels Common Applications: Hull bottom construction and reinforcement High-performance structural laminates Deck and cabin top construction Major structural repairs requiring maximum strength Building composite panels for racing or performance boats Applications requiring superior strength-to-weight ratios Structural components subject to multi-directional loads This 20-yard roll provides substantial material for professional boatyards and large-scale projects. When you need the ultimate in structural performance, impact resistance, and surface quality, biaxial fabric delivers proven results that outperform traditional woven materials. Part Number: 737-20UPC Code: 811343011864

WEST SYSTEM 740-10 Fiberglass & Repair This lightweight 4 oz woven fiberglass fabric is ideal for applications requiring excellent conformability, smooth finish, and moderate reinforcement without adding significant weight or stiffness. The 50-inch width provides generous coverage for a wide range of projects, while the 10-yard length offers ample material for medium-sized marine construction and repair work. Lightweight, Flexible Reinforcement: At 4 oz per square yard, this is one of the lightest woven fiberglass fabrics available, making it perfect for applications where you need reinforcement and moisture protection without adding bulk or rigidity. The lightweight construction drapes beautifully over complex curves and contours, conforming smoothly to virtually any surface shape. Superior Finish Quality: The fine weave pattern and light weight of this fabric create exceptionally smooth laminates with minimal surface texture. This reduces the amount of fairing and finishing work required, making it ideal for bright-finished wood applications, clear-coated surfaces, or anywhere a smooth, professional appearance is important. Key Benefits: Lightweight: 4 oz weight minimizes added bulk and stiffness Excellent Drape: Conforms smoothly to complex curves and contours Smooth Finish: Fine weave creates minimal surface texture Quick Wet-Out: Lightweight fabric saturates easily with epoxy Wide Coverage: 50-inch width reduces seams on large surfaces Versatile Applications: Ideal for sheathing, repairs, and light reinforcement Common Applications: Sheathing wood surfaces for moisture and abrasion protection Bright-finished wood applications requiring smooth surface Lightweight hull and deck repairs Covering foam or balsa core materials Creating smooth, clear-coated composite surfaces Light reinforcement where flexibility is important Cosmetic overlays and finish layers Whether you're sheathing a wooden hull, creating a smooth finish layer, or performing lightweight repairs, this 4 oz fiberglass fabric delivers exceptional conformability and finish quality for professional results in demanding marine environments. Part Number: 740-10UPC Code: 811343011888

WEST SYSTEM 742-20 Fiberglass & Repair This professional-grade 6 oz woven fiberglass fabric is a versatile, medium-weight cloth ideal for a wide range of marine laminating, repair, and reinforcement applications. The 60-inch width provides excellent coverage for large panels and surfaces, while the 20-yard length offers substantial material for large-scale projects and professional operations. Versatile Medium-Weight Fabric: At 6 oz per square yard, this woven E-glass fabric strikes an ideal balance between strength and workability. It's light enough to drape smoothly over curves and complex shapes, yet substantial enough to provide meaningful reinforcement and structural integrity. This makes it one of the most versatile fabrics for general marine construction and repair work. Excellent Wet-Out and Conformability: The woven construction allows epoxy resin to saturate quickly and completely, ensuring a strong bond with minimal voids. The fabric conforms easily to curved surfaces, corners, and irregular shapes, making it ideal for hull repairs, deck overlays, and complex composite work where the material needs to follow contours smoothly. Key Benefits: Medium Weight: 6 oz provides excellent strength without excessive stiffness Wide Coverage: 60-inch width minimizes seams on large panels Superior Drape: Conforms smoothly to curves and complex shapes Quick Wet-Out: Woven construction saturates easily with epoxy Versatile Applications: Suitable for laminating, repairs, and reinforcement Extended Length: 20-yard roll provides ample material for large projects Common Applications: Hull and deck laminating and overlays Structural repairs and reinforcement Sheathing wood surfaces for moisture protection Building composite panels and structures Covering foam or core materials in sandwich construction General fiberglass repair work Creating lightweight, strong laminates This 20-yard roll provides exceptional value for professional boatyards, contractors, and serious DIY enthusiasts tackling large-scale projects. Whether you're building new composite structures, repairing damaged hulls, or sheathing wood components, this 6 oz fiberglass fabric delivers the versatility, strength, and workability needed for professional-quality results in demanding marine environments. Part Number: 742-20UPC Code: 811343011925

WEST SYSTEM 801-HD Fiberglass & Repair 3" Heavy Duty Roller Frame This heavy-duty 3" caged roller frame is designed for applying epoxy and resin with professional control and durability. The robust construction holds 7" full-width roller covers as well as covers cut to narrower widths, making it a versatile tool for various epoxy application tasks. Heavy-Duty Construction: Built to withstand the demands of epoxy application, this heavy-duty frame features durable construction that resists bending and breaking during use. The reinforced design ensures reliable performance even when applying thick epoxy mixtures or working on challenging surfaces. Caged Roller Design: The caged roller frame securely holds roller covers in place during application, preventing slippage and ensuring consistent coverage. The cage design also makes it easy to slide covers on and off for quick changes between applications or when switching to fresh covers. Versatile Cover Compatibility: This frame accommodates both 7" full-width roller covers and covers that have been cut to narrower widths. This versatility allows you to use the same frame for large-area coating and for narrower applications where a full-width roller would be too wide. 3" Width for Controlled Application: The 3" width provides excellent control for applying epoxy to moderate-sized areas, making it ideal for coating decks, hulls, and other surfaces where you need more coverage than a brush provides but don't require the width of a full 7" roller. Key Benefits: Heavy-Duty: Durable construction for demanding epoxy work Caged Design: Securely holds roller covers in place Versatile: Accepts full-width or cut-down 7" covers 3" Width: Ideal for controlled, moderate-area coverage Professional Quality: Built for reliable, long-term use Easy Cover Changes: Quick roller cover installation and removal Common Applications: Applying epoxy coatings to decks and hulls Rolling out epoxy on moderate-sized surfaces Saturating fiberglass fabric with resin Applying barrier coats and protective coatings General epoxy and resin application work Usage Tips: Use with appropriate WEST SYSTEM roller covers for best results. The heavy-duty construction allows you to apply firm, even pressure for thorough epoxy coverage without worrying about frame failure. Clean the frame after use to extend its service life. This heavy-duty 3" roller frame is an essential tool for professional-quality epoxy application, providing the durability and versatility needed for demanding marine coating and laminating work. Part Number: 801-HDUPC Code: 811343012014

WEST SYSTEM 733 Fiberglass & Repair This professional-grade 9 oz woven E-glass fabric tape is engineered for structural reinforcement applications where strength, durability, and clean edges are essential. The 6-inch width and 50-yard length provide substantial coverage for large-scale projects, while the bound edges eliminate fraying and ensure professional-quality results. Structural Reinforcement: When bonded with WEST SYSTEM Epoxy, this versatile fiberglass tape delivers exceptional tensile strength to critical structural areas. It's specifically designed to reinforce chines, hull-to-deck corners, bulkhead joints, and similar high-stress applications where preventing hairline crack development is crucial. The woven E-glass construction provides a superior strength-to-weight ratio and excellent conformability around curves and corners. Bound Edges for Professional Results: Unlike raw-edge fiberglass cloth, this tape features factory-bound edges that prevent fraying during handling and application. This means cleaner installations, less waste, and a more professional appearance—especially important for visible structural work or areas that will receive minimal fairing. Key Benefits: High Tensile Strength: Resists crack development and structural stress Abrasion Resistance: Protects high-wear areas from damage Bound Edges: Eliminates fraying for cleaner, more professional installations Excellent Wet-Out: Woven construction allows epoxy to saturate quickly and completely Conformable: Easily wraps around curves, corners, and irregular shapes Versatile Width: 6-inch width ideal for chines, corners, and structural joints Common Applications: Reinforcing chines and hull corners Strengthening hull-to-deck joints Bulkhead tabbing and structural bonding Repairing and reinforcing high-stress areas Abrasion protection for wear-prone surfaces Crack prevention in structural joints This 50-yard roll provides ample material for substantial projects, making it an economical choice for boatyards, professional builders, and serious DIY enthusiasts. Whether you're building new or reinforcing existing structures, this woven fiberglass tape delivers the strength and quality you need for long-lasting results. Part Number: 733UPC Code: 811343011857

WEST SYSTEM 727-20 Fiberglass & Repair This professional-grade biaxial fiberglass tape delivers superior strength and finish quality for demanding marine repair and reinforcement projects. Engineered with 17 oz non-woven E-glass fabric, this tape features a unique dual-layer construction that outperforms traditional woven materials. Advanced Construction: Two layers of ±45° fiber orientation are precisely held together by light stitching, creating a stable, easy-to-handle material that conforms smoothly to complex curves and contours. The flat, non-crimped fiber design eliminates the waviness found in woven fabrics, resulting in a smoother surface finish with significantly reduced print-through. Performance Benefits: Superior Stiffness: Non-crimped fibers provide higher structural rigidity compared to woven fabrics Smooth Finish: Reduced print-through means less sanding and fairing work Excellent Wet-Out: Non-woven construction allows resin to saturate quickly and completely Versatile Application: Ideal for structural repairs, tabbing, and reinforcing critical areas Conformability: Easily wraps around curves and irregular shapes without bunching Common Applications: Hull and deck repairs Bulkhead tabbing and reinforcement Strengthening high-stress areas Laminate build-up for added thickness Structural bonding applications Whether you're performing critical structural repairs or reinforcing key components, this biaxial tape provides the strength and workability professionals demand with a finish quality that saves time in post-application fairing. Part Number: 727-20UPC Code: 811343011741

WEST SYSTEM 738-20 Fiberglass & Repair This advanced composite fabric combines the structural strength of biaxial fiberglass with the surface quality and secondary bonding properties of chopped strand mat, creating a versatile, high-performance material for demanding marine construction and repair applications. The 50-inch width and 20-yard length provide substantial coverage for large-scale professional projects. Dual-Layer Construction: This engineered fabric features biaxial fiberglass reinforcement (fibers oriented at ±45°) combined with a layer of chopped strand mat. The biaxial layer provides exceptional multi-directional strength and impact resistance, while the mat layer creates a smooth surface finish and excellent secondary bonding characteristics. Together, they create a laminate that's stronger, smoother, and more versatile than either material alone. Superior Strength and Stiffness: The biaxial fiber orientation delivers outstanding strength in multiple directions, making it ideal for structural applications where loads come from various angles. The ±45° fiber arrangement provides excellent resistance to torsional stress, impact, and flexing—critical for hull bottoms, high-stress panels, and structural components that must withstand real-world marine conditions. Excellent Surface Quality: The integrated chopped strand mat layer creates a smoother outer surface with reduced print-through compared to biaxial fabric alone. This means less fairing work and a better foundation for gelcoat, paint, or secondary bonding operations. The mat also improves interlaminar bonding between layers in multi-ply laminates. Key Benefits: Multi-Directional Strength: Biaxial construction provides strength in multiple directions Smooth Surface Finish: Mat layer reduces print-through and fairing work Excellent Impact Resistance: ±45° fiber orientation absorbs shock and flexing Superior Bonding: Mat layer enhances secondary bonding and interlaminar adhesion Efficient Layup: Combines two materials in one fabric for faster construction Wide Coverage: 50-inch width minimizes seams on large panels Common Applications: Hull bottom construction and reinforcement High-stress structural panels and components Deck and cabin top laminating Major structural repairs requiring strength and finish quality Building composite panels with smooth outer surfaces Applications requiring multi-directional strength and impact resistance This 20-yard roll provides substantial material for professional boatyards and large-scale projects. When you need the structural performance of biaxial fabric combined with the surface quality and bonding properties of mat, this engineered composite delivers both in a single, efficient material. Part Number: 738-20UPC Code: 811343011871

WEST SYSTEM 732 Fiberglass & Repair This professional-grade 9 oz woven E-glass fabric tape is specifically designed for structural reinforcement applications where durability, abrasion resistance, and impact protection are critical. The 4-inch width and 50-yard length provide substantial material for large-scale projects, while the bound edges prevent fraying for clean, professional installations. Structural Reinforcement Excellence: This versatile tape is ideal for reinforcing chines, hull/deck corners, bulkhead tabbing, and similar structural applications where additional tensile strength is needed. When bonded with WEST SYSTEM Epoxy, it provides exceptional reinforcement that resists hairline crack development, distributes stress loads, and strengthens critical joints and transitions. Bound Edges for Professional Results: Unlike cut fabric that can fray and create messy installations, this tape features factory-bound edges that maintain clean, straight lines throughout application. The bound edges make the tape easier to handle, position accurately, and produce professional-looking results without loose fibers or uneven edges. Superior Protection Properties: The 9 oz weight provides substantial reinforcement while remaining workable for hand lay-up applications. When saturated with epoxy, it creates a tough, durable laminate that excels in four key performance areas: durability for long-term structural integrity, abrasion resistance to withstand wear and contact, impact resistance to absorb shock without cracking, and excellent skinning properties for covering and protecting surfaces. Key Benefits: Structural Strength: Provides tensile reinforcement to resist cracking Bound Edges: Prevents fraying for clean, professional installations Durability: Creates long-lasting structural reinforcement Abrasion Resistance: Withstands wear and contact damage Impact Resistance: Absorbs shock without delamination Excellent Skinning: Ideal for covering and protecting surfaces Extended Length: 50-yard roll provides material for large projects Common Applications: Reinforcing chines and hull/deck corners Tabbing bulkheads and structural components Strengthening joints and transitions Preventing hairline crack development in high-stress areas Skinning surfaces for abrasion and impact protection General structural reinforcement and repair work Designed For: Durability Abrasion Resistance Impact Resistance Skinning This 50-yard roll provides exceptional value for professional boatyards, contractors, and serious DIY enthusiasts who need reliable structural reinforcement tape for demanding marine construction and repair applications. Part Number: 732UPC Code: 811343011833

WEST SYSTEM 650-2G Fiberglass & Repair G/flex 650 is a toughened, resilient liquid epoxy system engineered to excel where traditional rigid epoxies fail. This professional-grade 2-gallon kit delivers permanent waterproof bonds across an exceptionally wide range of materials, making it the ultimate solution for complex marine repairs and construction projects involving dissimilar substrates. Engineered Flexibility for Real-World Conditions: G/flex occupies the sweet spot between rigid epoxies and flexible sealants. It's more flexible than standard epoxies and polyester resins, yet significantly stiffer than adhesive sealants. This unique balance allows it to create structural bonds that absorb the constant stress of expansion, contraction, shock, and vibration without cracking or delaminating—critical for marine environments where materials are constantly moving. Bonds What Others Can't: G/flex excels at bonding dissimilar materials with different expansion rates and surface properties. It creates reliable, permanent bonds between fiberglass, ceramics, metals, plastics, composites, and even damp or difficult-to-bond woods. This versatility eliminates the need for multiple specialized adhesives and opens up repair possibilities that would be impossible with conventional epoxies. Key Performance Features: Permanent Waterproof Bonds: Fully cured epoxy is completely waterproof and marine-grade durable Toughened Formula: Absorbs impact and stress without brittle failure Bonds Damp Surfaces: Works on wet and difficult-to-bond woods, expanding your working conditions Simple 1:1 Mix Ratio: Easy mixing by volume eliminates measurement errors Fully Compatible: Can be modified with WEST SYSTEM fillers and additives for custom applications Fiberglass Laminating: Effectively wets out fiberglass tapes and fabrics for composite repairs Versatile Applications: Bonding hull-to-deck joints and structural components Repairing aluminum boats and metal-to-fiberglass connections Adhering to plastic hardware, PVC, and composite materials Bonding ceramics for through-hull fittings and hardware Structural repairs requiring flexibility and impact resistance Laminating fiberglass cloth for reinforcement and repairs This 2-gallon kit provides substantial coverage for professional boatyards, contractors, and serious DIY enthusiasts tackling large-scale projects. When you need a liquid epoxy that can handle the toughest bonding challenges across multiple materials in demanding marine environments, G/flex 650 delivers proven, reliable performance. Part Number: 650-2GUPC Code: 811343011970

WEST SYSTEM 6552-QT Fiberglass & Repair G/Flex 655 Epoxy Adhesive Repair Kit, 2 Quarts G/Flex 655 is a toughened, resilient liquid epoxy adhesive engineered to create permanent waterproof bonds across an exceptionally wide range of materials. This 2-quart repair kit is perfect for medium-sized projects where you need the proven performance of G/Flex without committing to larger quantities. Engineered Flexibility for Demanding Applications: With a modulus of elasticity of 150,000 PSI, G/Flex occupies the ideal middle ground between rigid epoxies and flexible sealants. It's more flexible than standard epoxies and polyester resins, yet significantly stiffer than adhesive sealants. This engineered flexibility allows it to create structural bonds that absorb the constant stress of expansion, contraction, shock, and vibration without cracking or failing—critical for marine environments where materials are constantly moving. Bonds What Others Can't: G/Flex excels at bonding dissimilar materials with different expansion rates and surface properties. It creates reliable, permanent waterproof bonds between fiberglass, ceramics, metals, plastics, composites, and even damp or difficult-to-bond woods. This versatility eliminates the need for multiple specialized adhesives and opens up repair possibilities that would be impossible with conventional epoxies. Versatile & Easy to Use: The simple 1-to-1 mix ratio by volume eliminates measurement errors and makes mixing straightforward. G/Flex can be modified with WEST SYSTEM fillers and additives for custom applications, and it effectively wets out fiberglass tapes and fabrics for composite repairs and reinforcement work. Working Time & Cure Schedule: Working Time: 45 minutes at room temperature for positioning and adjustment Initial Cure: 7 to 10 hours for handling strength Full Cure: 24 hours for maximum strength and performance Key Applications: Bonding hull-to-deck joints and structural components Repairing aluminum boats and metal-to-fiberglass connections Adhering to plastic hardware, PVC, and composite materials Bonding ceramics for through-hull fittings Structural repairs requiring flexibility and impact resistance Laminating fiberglass cloth for reinforcement This 2-quart kit provides the perfect amount for substantial repairs and medium-sized projects. When you need a liquid epoxy adhesive that can handle the toughest bonding challenges across multiple materials in demanding marine environments, G/Flex 655 delivers proven, reliable performance. Part Number: 6552-QTUPC Code: 811343012243

WEST SYSTEM 655-8 Fiberglass & Repair This 2-pack of G/flex 655 Epoxy Adhesive bottles provides a convenient supply of pre-thickened epoxy adhesive for permanent waterproof bonding of dissimilar materials in demanding marine environments. The bottle format offers easy dispensing and storage, making it ideal for users who prefer the convenience of bottles over tubes. Toughened, Versatile Epoxy Adhesive: G/flex 655 is a pre-thickened epoxy adhesive engineered to create permanent waterproof bonds across an exceptionally wide range of materials, including fiberglass, ceramics, metals, plastics, and even damp or difficult-to-bond woods. Its toughened formulation provides the flexibility to absorb stress from expansion, contraction, shock, and vibration without cracking or failing. Pre-Thickened for Immediate Use: The pre-thickened consistency is ready to use straight from the bottle—no additional fillers needed for most bonding applications. Simply dispense equal amounts of resin and hardener (1:1 ratio by volume), mix thoroughly, and apply. The thickened formula won't sag or run, making it perfect for vertical applications and gap-filling. Generous Working Time: G/flex provides a 46-minute pot life and an extended 75-minute open working time at room temperature, giving you plenty of time to position and adjust components. It reaches initial cure in 3-4 hours, workable cure in 7-10 hours, and should be allowed 24 hours before subjecting joints to high loads. Key Benefits: 2-Pack Value: Two bottles for extended use and backup supply Pre-Thickened: Ready to use without additional fillers Easy Dispensing: Bottle format for convenient application Toughened Formula: Flexible enough to absorb stress and vibration Versatile Bonding: Works on dissimilar materials Extended Working Time: 75 minutes for careful positioning Ideal Applications: Repairs to aluminum boats and metal components Bonding polyethylene and ABS canoes and kayaks Bonding dissimilar materials with different expansion rates Repairs to damp or difficult-to-bond woods General marine bonding requires flexibility and toughness Vertical applications and gap-filling Versatile System: G/flex can be modified with WEST SYSTEM fillers and additives for more specific bonding needs. It can also be added to other WEST SYSTEM epoxies to improve their toughness and flexibility, making it a versatile addition to your marine repair toolkit. This 2-pack provides excellent value for users who rely on G/flex for regular repairs and bonding projects. Whether you're fixing an aluminum boat, bonding plastic components, or tackling challenging materials, these bottles deliver proven performance in a convenient format. Part Number: 655-8UPC Code: 811343014759

WEST SYSTEM 655-2G Fiberglass & Repair G/Flex is a toughened, resilient two-part epoxy adhesive engineered to bond dissimilar materials with exceptional strength and flexibility. This professional-grade 2-gallon kit is ideal for large-scale marine projects, repairs, and construction where traditional rigid epoxies fall short. Unmatched Versatility: Unlike conventional epoxies that require perfectly matched surfaces, G/Flex excels at bonding a wide variety of materials—even those that are wet, damp, or difficult to bond. Its unique formulation creates permanent, waterproof bonds between fiberglass, metals, plastics, wood, composites, and more, making it the go-to solution for complex marine repairs. Key Performance Features: Superior Flexibility: Remains resilient and impact-resistant, absorbing stress and movement without cracking or delaminating Bonds Dissimilar Materials: Creates reliable bonds between materials with different expansion rates and properties Excellent Adhesion: Bonds to wet and damp surfaces, expanding your working conditions Waterproof & Durable: Fully cured adhesive is completely waterproof and resistant to marine environments Easy to Use: Simple 1:1 mix ratio by volume eliminates guesswork Moderate Working Time: Provides sufficient open time for positioning and adjustment Common Applications: Bonding hull-to-deck joints and structural components Repairing aluminum boats and metal-to-fiberglass connections Adhering plastic fittings, PVC, and ABS to various substrates Bonding wood to fiberglass or metal Composite repairs requiring flexibility Permanent waterproof sealing and bonding applications This 2-gallon kit provides substantial coverage for professional boatyards, serious DIY enthusiasts, and contractors tackling large-scale marine projects. When you need an adhesive that can handle the toughest bonding challenges in demanding marine environments, G/Flex delivers proven performance you can trust. Part Number: 655-2GUPC Code: 811343012205

WEST SYSTEM 407-B Fiberglass & Repair 407 Low Density Filler is a versatile epoxy additive designed to create lightweight, easily worked fairing compounds and adhesive mixtures without adding unnecessary weight to your vessel. This professional-grade 14 lb container is ideal for applications where you need the gap-filling and fairing properties of epoxy without the density of traditional fillers. Lightweight Performance: When blended with epoxy, 407 Low Density Filler creates a workable mixture that's significantly lighter than compounds made with high-density fillers. This makes it perfect for fairing, filling, and bonding applications where minimizing weight is important, such as racing boats, performance craft, or any vessel where every pound matters. Excellent Workability: The low-density formulation creates a smooth, easily worked compound that spreads effortlessly and sands cleanly. It's ideal for filling voids, creating lightweight fillets, and general fairing work where you need good gap-filling properties without adding structural weight. Key Benefits: Low Density: Minimizes weight addition to your vessel Easy to Work: Spreads smoothly and shapes effortlessly Good Sandability: Cuts cleanly for smooth finishing Versatile Applications: Suitable for fairing, filling, and lightweight bonding Gap Filling: Bridges voids and imperfections reliably Universal Compatibility: Blends into any WEST SYSTEM 105 Epoxy Resin/200 Series Hardener combination Common Applications: Fairing hull and deck surfaces where weight is a concern Filling voids and gaps in lightweight construction Creating lightweight structural fillets General fairing and shaping work Bonding applications where minimal weight addition is desired Filling and smoothing on performance and racing craft This 14 lb container provides substantial material for medium to large-scale projects while maintaining the convenience of a manageable size. Whether you're building, repairing, or fairing, 407 Low Density Filler delivers the performance you need without the weight penalty of denser alternatives. Part Number: 407-BUPC Code: 811343011581

WEST SYSTEM 420-36 Fiberglass & Repair 420 Aluminum Powder is a specialized epoxy additive designed to enhance the protective properties of your epoxy coatings. When blended into WEST SYSTEM epoxy, this fine aluminum powder creates a durable, moisture-resistant barrier that significantly improves surface hardness and abrasion resistance—ideal for marine applications where surfaces face constant wear and environmental exposure. Enhanced Surface Protection: Adding 420 Aluminum Powder to your epoxy coating transforms it into a tougher, more resilient surface. The aluminum particles increase hardness and abrasion resistance, helping your coating withstand the rigors of marine use, including foot traffic, equipment contact, and general wear. The improved moisture resistance provides an additional layer of protection against water intrusion, critical for long-term durability in wet environments. UV Protection & Paint Compatibility: 420 Aluminum Powder provides limited ultraviolet light protection for epoxy surfaces that won't be covered with additional coatings. This makes it valuable for areas where you need temporary UV resistance or where paint isn't practical. It also serves as an excellent base coat for subsequent painting, improving paint adhesion and creating a more durable foundation for topcoat systems. Key Benefits: Increased Hardness: Creates a tougher, more wear-resistant surface Superior Abrasion Resistance: Withstands foot traffic and equipment contact Enhanced Moisture Barrier: Improves water resistance for long-term protection UV Protection: Provides limited ultraviolet light resistance Paint-Ready Surface: Excellent base for topcoat systems Easy to Use: Simply add to any mixed WEST SYSTEM 105/200 Series Hardener combination Common Applications: Deck coatings requiring extra durability High-traffic areas needing abrasion resistance Moisture barrier coatings for bilges and wet areas Base coats for painted surfaces Protective coatings for exposed epoxy work This 36 oz container provides ample material for multiple coating projects. Whether you're protecting a deck, creating a durable base coat, or enhancing moisture resistance, 420 Aluminum Powder delivers measurable performance improvements to your epoxy coatings. Part Number: 420-36UPC Code: 811343012960

WEST SYSTEM 650-32 Fiberglass & Repair G/Flex 650-32 Epoxy, 32 oz. (2ea 16 oz. bottles) G/flex 650 is a toughened, versatile liquid epoxy engineered for permanent waterproof bonding of dissimilar materials in demanding marine environments. This 32 oz kit (two 16 oz bottles—one resin, one hardener) provides substantial material for extensive bonding, repair, and laminating applications requiring flexibility and toughness. Toughened for Flexibility and Strength: With a modulus of elasticity of 150,000 PSI, G/flex is more flexible than standard epoxies and polyester resins but much stiffer than adhesive sealants. This unique balance creates structural bonds that can absorb the stress of expansion, contraction, shock, and vibration without cracking or failing—ideal for bonding dissimilar materials with different expansion rates. Bonds Difficult Materials: G/flex excels at bonding materials that are challenging for standard epoxies, including plastics, metals, glass, masonry, fiberglass, ceramics, damp woods, and difficult-to-bond woods. This versatility makes it the go-to adhesive when you need to bond dissimilar materials or work with surfaces that standard epoxies struggle with. Easy 1:1 Mix Ratio: The simple 1-to-1 mix ratio by volume makes measuring and mixing straightforward—no complicated calculations or specialized metering equipment required. Simply dispense equal amounts of resin and hardener, mix thoroughly, and apply. Generous Working Time: G/flex provides 45 minutes of working time at room temperature, giving you ample time to position and adjust components. It reaches initial cure in 7-10 hours, allowing you to handle the assembly, and achieves full cure in 24 hours for maximum strength. Versatile and Customizable: G/flex can be modified with WEST SYSTEM fillers and additives for more specific bonding needs. It can also be used to wet out fiberglass tapes and fabrics for reinforcement applications, making it a versatile addition to your marine repair toolkit. Key Benefits: Toughened Formula: Flexible enough to absorb stress and vibration Easy 1:1 Mix Ratio: Simple measuring and mixing 45-Minute Working Time: Ample time for careful positioning Bonds Dissimilar Materials: Plastics, metals, glass, masonry, fiberglass Waterproof: Permanent bonds in marine environments Liquid Consistency: Flows easily for coating and saturation G/flex 650 Toughened Epoxy Adhesive is designed to bond to: Plastics Metals Glass Masonry Fiberglass Ceramics Damp and difficult-to-bond woods Common Applications: Bonding dissimilar materials with different expansion rates Repairs to aluminum boats and metal components Bonding polyethylene and ABS canoes and kayaks Repairs to damp or difficult-to-bond woods Wetting out and bonding fiberglass tapes and fabrics General marine bonding requiring flexibility and toughness This 32 oz kit provides substantial material for extensive bonding and repair projects requiring the unique toughness and versatility of G/flex liquid epoxy. Part Number: 650-32UPC Code: 811343012038

WEST SYSTEM 423 Fiberglass & Repair Graphite Powder 423 Graphite Powder is a very fine black powder designed to be mixed with WEST SYSTEM epoxy to create specialized low-friction, durable coating surfaces for marine applications. This 12 oz container provides ample material for multiple coating projects requiring enhanced performance characteristics. Low-Friction Performance: When mixed with epoxy, graphite powder produces a low-friction exterior coating surface that's ideal for rudders, centerboards, and racing craft bottoms that are dry-sailed. The graphite-enhanced coating reduces drag and improves performance, making it a favorite among competitive sailors and performance-oriented boaters. Enhanced Durability and Scuff Resistance: Beyond reducing friction, graphite powder significantly increases the epoxy's scuff resistance and overall durability. The graphite-reinforced coating creates a mar-resistant surface that withstands the wear and tear of launching, beaching, and general use without showing damage as readily as unmodified epoxy. Teak Deck Caulking Simulation: A popular application for graphite-modified epoxy is in teak deck construction, where the black mixture simulates traditional caulking between teak planks. This not only provides an authentic appearance but also protects the underlying resin from sunlight degradation while creating durable, waterproof seams. Easy to Use: Add up to 10% by volume (approximately 1 oz of graphite powder per 8 fl oz of mixed epoxy) to achieve the desired properties. The fine powder disperses easily into mixed epoxy, creating a smooth, uniform black coating. Key Benefits: Low Friction: Reduces drag on underwater surfaces Increased Scuff Resistance: Creates more durable, mar-resistant coating Enhanced Durability: Withstands launching, beaching, and general wear UV Protection: Black color helps protect resin from sunlight Authentic Appearance: Simulates traditional teak deck caulking Easy Mixing: Fine powder disperses smoothly into epoxy Common Applications: Coating rudders and centerboards for reduced friction Racing craft bottoms (dry-sailed boats) Simulating caulking in teak deck construction Creating mar-resistant coating surfaces Protecting epoxy from UV degradation Any application requiring low-friction, durable coating Important Note: Graphite powder is not an antifoulant and will not prevent marine growth. It's designed for performance enhancement and durability on dry-sailed craft or above-waterline applications. Mixing Guidelines: Addition Rate: Up to 10% by volume Approximate Measure: 1 oz graphite per 8 fl oz mixed epoxy Result: Smooth, black, low-friction coating This 12 oz container provides sufficient graphite powder for creating professional-quality low-friction coatings and simulated teak caulking on medium-sized projects. Part Number: 423UPC Code: 811343011765

WEST SYSTEM 410-B Fiberglass & Repair 410 Microlight is the ideal low-density filler for creating lightweight, easily worked epoxy fairing compounds. This professional-grade 4 lb container is specifically formulated for large-scale fairing projects where you need a smooth, sandable surface without adding unnecessary weight to your vessel. Engineered for Easy Fairing: West System developed Microlight to address the common challenges of traditional fairing fillers. It mixes into epoxy significantly more easily than typical fairing compounds, creating a smooth, creamy consistency that spreads effortlessly and feathers to a fine edge. This makes it especially suited for fairing large areas where workability and coverage are critical. Superior Sanding Performance: One of Microlight's standout features is its exceptional sandability—it's 30% easier to sand than most other epoxy-based fairing compounds. This translates to less time, less effort, and less dust when shaping and finishing your fairing work. The lightweight formulation cuts cleanly without loading sandpaper, allowing you to achieve smooth, fair surfaces faster. Economical for Large Projects: The low-density formulation means you get more coverage per pound compared to heavier fillers, making Microlight more economical for large fairing jobs. It feathers to a fine edge, minimizing the amount of material needed at transitions and reducing overall material costs. Key Benefits: Low Density: Lightweight formulation won't add unnecessary weight to your vessel Easy Mixing: Blends into epoxy more easily than typical fairing fillers 30% Easier to Sand: Saves time and effort during finishing work Fine Feathering: Creates smooth transitions and edges Economical Coverage: More coverage per pound for large-scale projects Smooth Workability: Spreads easily and shapes effortlessly Important Considerations: Microlight is not recommended for use under dark paint or on surfaces subject to high temperatures, as the low-density formulation may be affected by heat buildup. Designed For: Fairing large hull and deck areas Thickening epoxy for lightweight applications Creating smooth, sandable surfaces on light-colored finishes Filling and shaping where weight is a concern Microlight blends seamlessly into any WEST SYSTEM 105 Epoxy Resin/200 Series Hardener combination, giving you a versatile, high-performance fairing compound for professional-quality results. Part Number: 410-BUPC Code: 811343011635

WEST SYSTEM 403-B Fiberglass & Repair 403 Microfibers Adhesive Filler is a fine fiber blend specifically engineered to create versatile, high-strength epoxy adhesives with exceptional bonding and gap-filling properties. This professional-grade 20 lb bulk container is ideal for boatyards, professional builders, and serious DIY enthusiasts who need a reliable, multi-purpose adhesive filler for demanding marine applications. The Ultimate Wood Bonding Filler: While 403 Microfibers excels in many applications, it's most renowned for creating superior wood-bonding adhesives. When blended with epoxy, the fine fiber structure creates a thickened mixture that maintains excellent wetting and penetrating properties, allowing it to soak into wood fibers for maximum mechanical bonding while still providing reliable gap-filling performance. Gap-Filling with Penetration: Unlike purely thickening fillers that simply bulk up epoxy, 403 Microfibers strikes the perfect balance between gap-filling capability and penetration. The fine fiber blend creates a structural adhesive that can bridge gaps and fill voids while still wetting out and penetrating porous surfaces like wood. This dual capability makes it ideal for real-world bonding situations where surfaces aren't perfectly matched. Multi-Purpose Versatility: 403 Microfibers transforms epoxy into a true multi-purpose adhesive suitable for a wide range of bonding applications beyond wood. It creates strong, reliable bonds for structural joints, hardware installations, and general assembly work where you need both strength and gap-filling performance. Key Benefits: Superior Wood Bonding: Penetrates wood fibers while filling gaps for maximum bond strength Excellent Gap Filling: Bridges imperfect joints and uneven surfaces reliably Strong Structural Bonds: Creates high-strength adhesive joints for critical applications Good Wetting Properties: Maintains penetration into porous surfaces despite thickening Multi-Purpose Use: Versatile adhesive for wood, composites, and general bonding Universal Compatibility: Works with WEST SYSTEM 105/200 Series, G/flex 650, or G/5 Five-Minute Adhesive Common Applications: Bonding wood components in boat construction and repair Structural joints requiring gap-filling capability Hardware bonding and installation General assembly and construction adhesive Bonding dissimilar materials Filling and bonding imperfect joints This 20 lb container provides exceptional value for professional operations and frequent users who demand consistent, reliable bonding performance across a wide range of marine construction and repair applications. Part Number: 403-BUPC Code: 811343011246