--- product_id: 26499338 title: "407-5 Low Density Filler 4 oz" brand: "west system" price: "€ 64.57" currency: EUR in_stock: true reviews_count: 9 category: "West System" url: https://www.desertcart.fr/products/26499338-407-5-low-density-filler-4-oz store_origin: FR region: France --- # Dark red/brown cure for easy visual control Ultra low density for featherlight fairing Peanut butter consistency for effortless shaping 407-5 Low Density Filler 4 oz **Brand:** west system **Price:** € 64.57 **Availability:** ✅ In Stock ## Summary > ⚡ Shape your masterpiece with featherlight finesse! ## Quick Answers - **What is this?** 407-5 Low Density Filler 4 oz by west system - **How much does it cost?** € 64.57 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.fr](https://www.desertcart.fr/products/26499338-407-5-low-density-filler-4-oz) ## Best For - west system enthusiasts ## Why This Product - Trusted west system brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Visual Precision:** Cures to a distinctive dark red/brown, letting you track your work with confidence. - • **Sands Like a Dream:** Easily sands smoother than fiberglass, speeding up finishing and perfecting surfaces. - • **Effortless Application:** Mixes to a smooth, peanut butter-like texture for easy troweling and shaping. - • **Versatile Compatibility:** Seamlessly blends with WEST SYSTEM 105 Resin/20X Hardener, G/flex 650, or G/5 Adhesive. - • **Featherlight Fairing Power:** Blended microballoons deliver a low-density filler that won’t weigh down your project. ## Overview West System 407-5 Low Density Filler is a premium microballoon-based epoxy fairing putty designed for professional-grade woodworking and repair. It mixes easily to a peanut butter consistency, cures to a dark red/brown color for visual control, and sands effortlessly, making it ideal for precise fairing and finishing. Compatible with multiple WEST SYSTEM epoxy products, it offers a high strength-to-weight ratio for durable, lightweight repairs. ## Description Product description WEST SYSTEM Fillers modify the consistency of epoxy, greatly increasing its versatility for a wide array of applications Syrup Consistency (unthickened resin/hardener mixture or "neat" epoxy) CONSISTENCY: Unthickened epoxy, syrup CHARACTERISTICS: Drips off vertical surfaces USES: Coating; wetting out surfaces before bonding; applying fiberglass, graphite, and other reinforcing fabrics Catsup Consistency (slightly thickened) CONSISTENCY: Slightly thickened epoxy, slurry CHARACTERISTICS: Sags down vertical surfaces USES: Laminating or bonding flat panels with large surface areas, injecting into holes with a syringe Mayonnaise Consistency (moderately thickened) CONSISTENCY: Moderately thickened epoxy mixture, creamy CHARACTERISTICS: Clings to vertical surfaces; peaks fall over USES: General bonding, filleting, hardware bonding Peanut Butter Consistency (maximum workable thickness) CONSISTENCY: Maximum thickness epoxy mixture, dense CHARACTERISTICS: Clings to vertical surfaces; peaks stand USES: Gap filling, filleting, fairing, bonding uneven surfaces Versatile, reliable WEST SYSTEM products WEST SYSTEM offers high-quality epoxy resins, hardeners, fillers, and additives. Developed by our in-house chemists, our formulations are proprietary, structural, and marine grade. These epoxies have set the standard for epoxy quality in the marine industry and beyond since 1969. WEST SYSTEM Product Selection Guide How to choose the right WEST SYSTEM Epoxy products for your project 1. Start with 105 Epoxy Resin, the basic ingredient of all WEST SYSTEM Epoxy compounds. Use 300 Mini Pumps for convenient and accurate metering. 2. Mix with one of four WEST SYSTEM hardeners. Select a hardener for its intended use and for the cure speed best suited for your job in the temperature range in which you are working. 3. Add one of six WEST SYSTEM fillers to thicken the mixture as needed. Select a filler for its handling characteristics or cured physical properties. Or, add WEST SYSTEM additives to provide specific coating properties. WEST SYSTEM pigments can be used to change the epoxy's color. Pigments for tinting epoxy 501 White Pigment 501 White Pigment is an epoxy-based liquid colorant used to tint the epoxy mixture white, providing an even, white color base for the final finish system. Cured, pigmented epoxy surfaces are not a final finish surface, but require an additional paint or UV filter coating for ultraviolet protection. Add to the mixed resin/hardener at a rate of approximately one teaspoon of pigment to 8 fl oz of epoxy. More pigments will increase opaqueness and mixture viscosity. One 4 fl oz bottle will tint approximately 1.5 gal of epoxy. Adding a coloring agent to WEST SYSTEM Epoxy is frequently done to make colored castings, highlight an epoxy-coated surface, act as a colored base coat for paint, etc. Without exception, adding pigment will weaken the cured epoxy mixture to some degree. Use very small amounts of pigment, about 5% by weight. As a result, thin films of colored epoxy are somewhat transparent. It usually requires several coats to make the film opaque. 502 Black Pigment 502 Black Pigment is an epoxy-based liquid colorant used to tint the epoxy mixture black, providing an even, black color base for the final finish system. Cured, pigmented epoxy surfaces are not a final finish surface, but require an additional paint or UV filter coating for ultraviolet protection. Add to the mixed resin/hardener at a rate of approximately one teaspoon of pigment to 8 fl oz of epoxy. More pigments will increase opaqueness and mixture viscosity. One 4 fl oz bottle will tint approximately 1.5 gal of epoxy. 503 Gray Pigment 503 Gray Pigment is an epoxy-based liquid colorant used to tint the epoxy mixture gray, providing an even, gray color base for the final finish system. Cured, pigmented epoxy surfaces are not a final finish surface, but require an additional paint or UV filter coating for ultraviolet protection. Add to the mixed resin/hardener at a rate of approximately one teaspoon of pigment to 8 fl oz of epoxy. More pigments will increase opaqueness and mixture viscosity. One 4 fl oz bottle will tint approximately 1.5 gal of epoxy. Additives for modifying epoxy 420 Aluminum Powder 420 Aluminum Powder will increase the hardness and abrasion resistance of the coated surface and improve its moisture resistance. 420 provides limited protection from ultraviolet light in areas that will not be protected with other coatings and can be used as a base for subsequent painting. Cures to a metallic gray color. Add to mixed resin/hardener at the rate of 5%-10% by volume or 1.5 tablespoons per 8 fl oz of epoxy (10 strokes each of resin and hardener from 300 Mini Pumps). 36 oz of 420 will modify up to five gallons of mixed epoxy. 422 Barrier Coat Additive 422 Barrier Coat Additive is a proprietary blend designed to further improve cured epoxy’s moisture exclusion effectiveness. 422 is used as a barrier coating additive to help prevent gelcoat blistering in polyester fiberglass boats. 422 also increases the epoxy’s abrasion resistance. Cures to a light gray color. Add to mixed resin/hardener at the rate of 15 to 20% by volume or 3 tablespoons per 8 fl oz of epoxy. 16 oz can of 422 will modify approximately half a gallon of mixed epoxy. 423 Graphite Powder 423 Graphite Powder is a fine black powder that can be mixed with epoxy to produce a low-friction exterior coating with increased scuff resistance and durability. Epoxy/graphite is commonly used as a low-load, low-speed bearing surface, as a coating on rudders and centerboards, or on the bottoms of racing craft that are dry sailed. It does not provide antifouling qualities. The epoxy/graphite mixture cures to a black color. Add to mixed resin/hardener at the rate of 10% by volume or 1.5 tablespoons per 8 fl oz. of epoxy. 12 oz can of 423 will modify approximately one gallon of epoxy. Review: Great filler that is easy to sand - West Systems make the best epoxy products for my outdoor wood projects. This filler makes it much easier to sand. I have used West Systems products for years. Review: Excellent fairing compound. - This fairing compound mixes well with epoxy to thicken the epoxy to a orange-red colored goo, the viscosity of which depends on how much you mix in -- from a soup to a peanut butter type of consistency. It is easy to trowel on to shape whatever it is you are forming. Sands much easier than fiberglass, but still strong. The only improvement would be if they could make it into a lighter color, or better yet, white. The red-orange color is bold and takes several coats to completely cover over with white gelcoat. ## Features - 407 Low-Density is a blended microballoon-based fairing filler for WEST SYSTEM Epoxy. - Add 407 to a mixture of epoxy resin/hardener to create a fairing putty. - Blended with epoxy to a “peanut butter” consistency, it will be easy to fair. - Cures to a dark red/brown color. - You can blend it into any WEST SYSTEM 105 Resin/20X Hardener combination, G/flex Epoxy 650, or G/5 Five-Minute Adhesive. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B0149ISZ50 | | Best Sellers Rank | #158,529 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #182 in Wood Filler | | Brand | West System | | Brand Name | West System | | Color | Brown | | Compatible Material | Fiberglass | | Container Type | Can | | Customer Reviews | 4.8 out of 5 stars 104 Reviews | | Included Components | urea-resin-adhesives | | Item Form | Putty | | Item Package Quantity | 1 | | Item Type Name | West System 407-5 Low Density Filler 4 oz | | Item Weight | 0.1 Pounds | | Manufacturer | Gougeon Brothers, Inc. | | Material | Epoxy Resin , Resin | | Material Type | Epoxy Resin, Resin | | Model | CECOMINOD050909 | | Number of Pieces | 1 | | Other Special Features of the Product | Blended Microballoon Composition, Easy Sanding/Carving, High Strength-to-Weight Ratio, Cures to Dark Red/Brown Color, Compatible with Various WEST SYSTEM Epoxy Products | | Part Number | 407-5 | | Special Feature | Blended Microballoon Composition, Easy Sanding/Carving, High Strength-to-Weight Ratio, Cures to Dark Red/Brown Color, Compatible with Various WEST SYSTEM Epoxy Products Special Feature Blended Microballoon Composition, Easy Sanding/Carving, High Strength-to-Weight Ratio, Cures to Dark Red/Brown Color, Compatible with Various WEST SYSTEM Epoxy Products See more | | Specific Uses For Product | Carpentry, Furniture, Repair, Wall Repair, Woodworking | | UPC | 811343011543 | | Unit Count | 4.0 Ounce | | Viscosity Level | Low to Medium | | Volume | 4 Fluid Ounces | | Warranty Description | Warranty | | Water Resistance Level | Not Water Resistant | ## Product Details - **Brand:** West System - **Item Form:** Putty - **Material:** Epoxy Resin, Resin - **Specific Uses For Product:** Carpentry, Furniture, Repair, Wall Repair, Woodworking ## Images ![407-5 Low Density Filler 4 oz - Image 1](https://m.media-amazon.com/images/I/71M+uP8GF4L.jpg) ## Customer Reviews ### ⭐⭐⭐⭐⭐ Great filler that is easy to sand *by S***R on October 24, 2025* West Systems make the best epoxy products for my outdoor wood projects. This filler makes it much easier to sand. I have used West Systems products for years. ### ⭐⭐⭐⭐⭐ Excellent fairing compound. *by I***. on January 7, 2025* This fairing compound mixes well with epoxy to thicken the epoxy to a orange-red colored goo, the viscosity of which depends on how much you mix in -- from a soup to a peanut butter type of consistency. It is easy to trowel on to shape whatever it is you are forming. Sands much easier than fiberglass, but still strong. The only improvement would be if they could make it into a lighter color, or better yet, white. The red-orange color is bold and takes several coats to completely cover over with white gelcoat. ### ⭐⭐⭐⭐⭐ Top notch! *by R***A on June 2, 2025* I had to do some fairing and filling of a keel and rudder. It worked great for filling. Not great for fairing. Very good product, be sure to use whichever product (403, 405, 407, 410, etc) is recommended for your use, it makes a big difference in finishing! I definitely prefer West system products, too quality stuff for boat work! ## Frequently Bought Together - West System 407-5 Low Density Filler 4 oz - West System 406-2 Colloidal Silica 1.7 oz - WEST SYSTEM 105A Epoxy Resin (32 fl oz) Bundle with 205A Fast Epoxy Hardener (7 fl oz) and 300 Mini Pumps Epoxy Metering 3-Pack Pump Set (3 Items) --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.fr/products/26499338-407-5-low-density-filler-4-oz](https://www.desertcart.fr/products/26499338-407-5-low-density-filler-4-oz) --- *Product available on Desertcart France* *Store origin: FR* *Last updated: 2026-05-30*