

🛠️ Elevate your epoxy game — strong bonds, zero sag, all-American quality!
WEST System® 404 High-Density Epoxy Filler is a premium thickening additive designed to maximize epoxy resin strength and durability. Ideal for structural filleting, hardware bonding, and gap filling, it produces a non-slumping, water-resistant paste compatible with multiple WEST SYSTEM epoxies. Made in the USA, it offers adjustable viscosity for tailored applications, ensuring superior performance in demanding woodworking and repair projects.



















| ASIN | B0006JJAU6 |
| Best Sellers Rank | #119,383 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #158 in Wood Filler |
| Brand | West System |
| Color | off-white |
| Date First Available | October 1, 2001 |
| Item Form | Paste |
| Item Package Quantity | 1 |
| Item Volume | 46 Fluid Ounces |
| Item Weight | 3.3 pounds |
| Item model number | 404-45 |
| Manufacturer | Gougeon Brothers, Inc. |
| Material | epoxy; filler |
| Number of Pieces | 1 |
| Package Information | Aerosol Can |
| Product Dimensions | 21.25 x 16 x 11.5 inches |
| Special Feature | Strong |
| Specific Uses For Product | Carpentry, Gap Filling, Hardware Bonding, Repair, Structural Fillets, Woodworking |
| UPC | 811343011413 |
| Unit Count | 43.0 Ounce |
| Viscosity | Adjustable by adding filler |
| Viscosity Level | High |
| Water Resistance Level | Water Resistant |
B**I
Epoxy filler
Nice addition to west epoxy, thickens mixture and fills gaps, just as advertised.
R**U
great products
west system is great products
K**A
Great filler
I use West System products exclusively when doing marine fiberglass repairs/modifications. There are many different filler options, so choose the one that best fits your needs. Mix the resin, add the filler and mix to your desired consistency, then apply. For me, usually similar to mayonnaise works best. Drying time will depend on your choice of hardener and if you've adjusted the resin/hardener ratio.
I**G
Solid
Must have for epoxy work, mixes well without clumps
C**E
Works as deisigned
Mixes well. Solid when set using West System products.
M**.
Great filler
Easy to thicken your resin with, great product. Makes really strong glue when mixed with epoxy resin.
J**R
Works good
We purchased this to fix our RV fill in a soft spot. First off it is easy to mix in with the kit but it does set up fast! So you need to be ready to go to pour when you mix it. It worked great for what we used it for, has been fixed for well over a year now and still holding strong.
A**R
Five Stars
Excellent product. Does what it's supposed to do, and a lot cheaper through Amazon.
G**S
Works has West System had said
Trustpilot
1 week ago
3 weeks ago