Page 645 - Lewis

644 West System Epoxy

Fillers and Additives

422 Barrier Coat Additive

FIG 5525b

A proprietary blend designed to improve cured epoxy's moisture-exclusion effectiveness. 422 is used as a barrier coating additive to
help prevent gelcoat blistering. 422 also increases the epoxy's abrasion resistance. Cures to a light gray color. Added to mixed
resin/hardener at the rate of 15 to 20% by weight — 3 tablespoons per 8-fl. oz. epoxy (approximately 32-oz. per B group).
No. Each Color Size Case
422-16 $26.95 Gray 16 oz. 6
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No. 420 Aluminum Powder White Color Pigment

FIG 5514b

FIG 5511b
WEST SYSTEM pigments are epoxy-based pastes which can
be used to color the epoxy mixture. Pigments should be added
at a rate of approximately 1 teaspoon of pigment to 8 oz. of
420 Aluminum Powder is added at 5 to 10% by volume to pro-
WEST SYSTEM EPOXY and water protection. Can be drilled and tapped. Case ond or third coats because they can interfere with the wetting
vide protection from ultraviolet light in areas which will not be
epoxy. More pigment will increase opaqueness; however,
adding pigment leads to a proportional increase in mixture vis-
protected with other coatings and as a base for subsequent
painting. Increases both the hardness of the coated surface
cosity. Pigments should only be added to epoxy used for sec-
Color
Each
Size
qualities of the epoxy. Cured pigmented epoxy surfaces do not
No.
420-36
36 oz.
provide a final finish surface, but require enamel or
6
$55.60
Metallic Gray
polyurethane systems to provide ultraviolet protection.
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Size
Case
No.
Color
Each
$21.25
6
501-8
White
4 oz.
No. 423 Black Graphite Powder
410 Microlight™
FIG 5524b
410 The ideal low-density filler for
creating a light, easily worked fair-
ing compound especially suited for
fairing large areas. 410 MICRO-
LIGHT™ handles well and mixes
FIG 5513b with greater ease than 407 or
Microballoons, and is approximately 30% easier to sand. It is
also more economical for large fairing jobs but is not recom-
423 Graphite Powder is a fine black powder that can be mixed mended under dark paint or other surfaces subjected to high
with WEST SYSTEM epoxy to produce a low-friction exterior temperatures. Cures to a light tan color. Do not mix 410
coating with increased scuff resistance and durability. MICROLIGHT™ filler with polyester or vinylester resins.
Epoxy/Graphite is commonly used as a bearing surface and as Microlight will inhibit the cure of polyester or vinylester resins.
a coating on rudders. No. Each Size Case
No. Each Color Size Case 410-2 $17.05 1.7 oz. 24
423 $19.70 Black 12 oz. 6 410-7 35.30 4.3 oz. 12
For Empty Caulking Cartridges — See Fig. 4805 410B 310.45 4 lbs. 1
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ALWAYS MIX RESIN & HARDENERS FIRST BEFORE ADDING FILLERS AND ADDITIVES
For superior holding strength it is always best to "Wet Out" the substrate
with your resin/hardener mixture before adding any filler.