---
product_id: 20049723
title: "404-45 High Density Filler 46oz."
brand: "west system"
price: "₩202318"
currency: KRW
in_stock: true
reviews_count: 9
category: "West System"
url: https://www.desertcart.kr/products/20049723-404-45-high-density-filler-46oz
store_origin: KR
region: South Korea
---

# High-density gap filler Maximizes epoxy adhesive strength Customizable viscosity for perfect bonding 404-45 High Density Filler 46oz.

**Brand:** west system
**Price:** ₩202318
**Availability:** ✅ In Stock

## Summary

> 🧩 Bond like a boss — fill gaps, fix fast, and never settle for less!

## Quick Answers

- **What is this?** 404-45 High Density Filler 46oz. by west system
- **How much does it cost?** ₩202318 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.kr](https://www.desertcart.kr/products/20049723-404-45-high-density-filler-46oz)

## 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

- • **Precision Gap Filling:** Easily fills large gaps and creates flawless structural fillets, eliminating the need for perfect joinery.
- • **Versatile Compatibility:** Seamlessly blends with WEST SYSTEM 105 Resin/20X Hardener, G/flex Epoxy 650, and G/5 Five-Minute Adhesive for ultimate flexibility.
- • **Tailored Viscosity Control:** Adjust consistency from slurry to thick paste to perfectly suit your project’s demands without sagging or air traps.
- • **Water-Resistant Durability:** Ensures long-lasting, moisture-resistant bonds ideal for marine, woodworking, and hardware applications.
- • **Unmatched Structural Strength:** Transforms epoxy into a powerhouse adhesive for hardware bonding and high-cyclic load durability.

## Overview

WEST System 404-45 High Density Filler is a premium epoxy additive designed to maximize adhesive strength and fill gaps with precision. Compatible with multiple WEST SYSTEM epoxy products, it offers adjustable viscosity for tailored application, creating strong, water-resistant bonds ideal for hardware bonding, structural fillets, and demanding woodworking projects.

## Description

WEST System 404-45 High Density Filler 46oz.: Boating Equipment: desertcart.com: Tools & Home Improvement

Review: Epoxy filler - Nice addition to west epoxy, thickens mixture and fills gaps, just as advertised.
Review: great products - west system is great products

## Features

- THIS EPOXY THICKENING additive maximizes epoxy's adhesive properties in hardware bonding or wherever high-cyclic loads are expected. Blended with epoxy for an excellent gap filler, to creating structural fillets, or wherever you need an especially strong bond. Blend it into any WEST SYSTEM 105 Resin/20X Hardener combination, G/flex Epoxy 650, or G/5 Five-Minute Adhesive. Blended with epoxy, it will cure to an off-white color.
- HARDWARE OR STUD BONDING is a popular use of this filler. Even small amounts of this 404-High Density added to a blend of epoxy resin and hardener will reduce creep in the cured epoxy. Mix this filler into liquid epoxy to create slurry. It should be thick enough to stay in a horizontal hole, but not too thick. (Blending too much filler into epoxy can trap air.)
- THICKEN EPOXY with this high-density filler to make a non-slumping adhesive that will bridge large gaps. It will strongly bond wood joints, saving you the time and labor involved in crafting tight joinery.
- FOR MAXIMUM STRENGTH add only enough filler to completely bridge gaps between surfaces without sagging or running out of the joint, pilot hole, or gap. A small amount should squeeze out of the joints when clamped, or when hardware is inserted. For thick mixtures, don’t fill the mixing cup more than 1/3 full of epoxy before adding filler.
- THE AMOUNT OF FILLER you add controls epoxy's viscosity. For hardware bonding, mix 404 High-Density filler into epoxy to create a moderately loose slurry. It should be thick enough to stay in a horizontal hole, but not too thick. The chart below offers guidelines to the differences between neat (unthickened) epoxy and three popular consistencies of thickened epoxy: "catsup," "mayonnaise," and "peanut butter."

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0006JJAU6 |
| Best Sellers Rank | #202,130 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #234 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 |

## Product Details

- **Brand:** West System
- **Item Form:** Paste
- **Material:** epoxy; filler
- **Special Feature:** Strong
- **Specific Uses For Product:** Carpentry, Gap Filling, Hardware Bonding, Repair, Structural Fillets, Woodworking

## Images

![404-45 High Density Filler 46oz. - Image 1](https://m.media-amazon.com/images/I/71wtb8ECQOL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Epoxy filler
*by B***I on December 9, 2023*

Nice addition to west epoxy, thickens mixture and fills gaps, just as advertised.

### ⭐⭐⭐⭐⭐ great products
*by R***U on December 30, 2025*

west system is great products

### ⭐⭐⭐⭐⭐ Great filler
*by K***A on June 25, 2025*

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.

## Frequently Bought Together

- WEST SYSTEM 404-45 High Density Filler 46oz.
- 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)
- West System 406-7 Collodial Silica 5.5oz, off-white

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**Shop now:** [https://www.desertcart.kr/products/20049723-404-45-high-density-filler-46oz](https://www.desertcart.kr/products/20049723-404-45-high-density-filler-46oz)

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*Product available on Desertcart South Korea*
*Store origin: KR*
*Last updated: 2026-02-09*