Page 643 - Lewis

642 West System Epoxy

Filler Buying Guide

High-Density Approximate mixed epoxy required to produce a "catsup",
vs. "mayonnaise" or "peanut butter" consistency for the various
Low-Density Fillers sized filler products. Quantity of mixed epoxy required for
Gougeon technical manuals may refer to Package "catsup" "mayonnaise" "peanut butter"
epoxy or resin/hardener mixture, mean- Filler size consistency consistency consistency
ing mixed resin and hardener without fillers 403-9 6.0 oz. 3.8 qt. 2.5 qt. 1.0 qt.
added; and thickened mixture, meaning
resin/hardener with either high-density or 403-28 20.0 oz. 3.2 gal. 2.0 gal. .9 gal.
low-density fillers added. 403-B 20.0 lb. 48.0 gal. 32.0 gal. 15.3 gal.
Fillers are used to thicken the basic 404-15 15.2 oz. 1.2 qt. .9 qt. .7 qt.
resin/hardener mixture for specific applica- 404-45 45.6 oz. 3.6 qt. 2.8 qt. 2.0 qt.
tions. Each filler possesses a unique set of
physical characteristics, but the fillers can be 404-B 30.0 lb. 9.4 gal. 7.4 gal. 5.3 gal.
generally categorized as either high-density
or low-density. 405 8.0 oz. .9 qt. .7 qt. .6 qt.

High-density filler mixtures cure to a 406-2 1.9 oz. 1.3 qt. .9 qt. .5 qt.
strong hard-to-sand plastic that are useful in 406-7 6.0 oz. 1.1 gal. 3.0 qt. 1.7 qt.
structural applications like bonding, filleting
and hardware bonding. High-density fillers 406-B 10.0 lb. 27.0 gal. 16.0 gal. 6.0 gal.
include 403, 404, 405, and 406. 407-5 15.2 oz. 1.7 qt. 1.3 qt. 1.0 qt.
.4 qt.
.3 qt.
.5 qt.
4.7 oz.
WEST SYSTEM EPOXY used for cosmetic or surface applications like 410-2 2.0 oz. 1.2 qt. 2.4 gal. 1.8 gal.
Low-density filler mixtures cure to light,
407-15
easily sandable material that is generally
407-B
6.0 gal.
14.0 lb.
4.8 gal.
3.7 gal.
shaping or fairing. 407 and 410 are low-
.7 qt.
.9 qt.
density fillers.
3.0 gal.
5.0 lb.
410-7
4.0 lb.
5.6 gal.
7.2 gal.
410-B
8.9 gal.
Filler Selection Guides
Filler Application Charts
Suitability of various fillers for specific applications Physical properties and handling characteristics of
various epoxy/filler mixtures
FILLER
FILLER APPLICATION
MOST SUITABLE=4 403 404 405 406 407 410 GENERAL FILLER
LEAST SUITABLE=0 CHARACTERISTICS 403 404 405 406 407 410
STRENGTH 3 5 4 4 1 1
LAMINATING 4 2 2 3 2 0 (Strongest = 5)
BONDING 2 4 2 3 1 0 WEIGHT 3 1 3 3 4 5
(Lightest = 5)
FAIRING 0 0 0 0 3 4
SANDING 2 1 2 2 4 5
(Easiest = 5)
HARDWARE BONDING 2 4 2 3 0 0
TEXTURE 1 2 3 5 4 4
(Smoothest = 5)
FILLETING 1 2 3 4 3 0
MIXING
(Easiest = 5) 5 2 4 3 2 4