🧩 Bridge the gap to stronger bonds — don’t settle for less!
WEST System 404-45 High Density Filler is a 46oz epoxy additive designed to thicken and strengthen epoxy mixtures. It maximizes adhesive properties for hardware bonding and high-cyclic load applications, fills gaps effectively, and cures to a durable off-white finish. Compatible with multiple WEST SYSTEM epoxy products, it offers adjustable viscosity for precise application and water resistance for lasting performance in woodworking and repair.
| ASIN | B0006JJAU6 |
| Best Sellers Rank | #116,825 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #149 in Wood Filler |
| Brand Name | West System |
| Color | off-white |
| Compatible Material | Wood |
| Container Type | Aerosol Can |
| Customer Reviews | 4.7 out of 5 stars 104 Reviews |
| Included Components | FILLER HIGH-DENSITY 43 OZ |
| Item Form | Paste |
| Item Height | 11.5 inches |
| Item Package Quantity | 1 |
| Item Type Name | West System Filler |
| Item Weight | 3.3 Pounds |
| Manufacturer | Gougeon Brothers, Inc. |
| Material Type | epoxy; filler |
| Model | 404-45 |
| Other Special Features of the Product | 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 |
| Volume | 46 Fluid Ounces |
| Warranty Description | Limited Warranty |
| 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.
Trustpilot
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