SKU:SWES-420-36
In stock
Couldn't load pickup availability
West System 420 Aluminum Powder is a coating additive you stir into mixed 105 epoxy for a harder, more abrasion-resistant surface with better moisture resistance. It cures metallic gray, gives limited UV protection where the epoxy will not be covered by another coating, and works as a base for paint.
How much to add
Add 5 to 10% by volume, about 1½ tablespoons per 8 fl oz of mixed epoxy. One 36 oz can modifies up to 5 gallons of mixed epoxy. Stir it into resin and hardener that are already mixed. West lists it for fiberglass repairs, reusable mold surfaces, boat bottoms and composite aluminum castings.
- Fine aluminum powder, 98 to 100% aluminum, 50 to 60 micron average particle size
- 420-36: 36 oz (1,020 g) can
- Cures metallic gray; harder, more abrasion- and moisture-resistant coating
- Limited UV protection; can be painted over
- For West System 105 resin with any 200-series hardener
Coating a fiberglass hull to keep water out? 422 Barrier Coat Additive is the West additive built for blister prevention. For a slick, low-friction coat on rudders and centerboards, see 423 Graphite Powder.
Technical Specifications
Net Weight by Size
Compare Fillers
| Product |  West System 420 Aluminum PowderYou're viewingfrom $119.37
|  West System 422 Barrier Coat Additivefrom $60.09
|  West System 423 Graphite Powderfrom $39.88
|
|---|---|---|---|
| Best for | Coating additive (aluminum powder) | Barrier coat additive (aluminum and mica blend) | Coating additive (graphite powder) |
| Sandability | Not applicable | Not applicable | Not applicable |
| Resins | Epoxy | Epoxy | Epoxy |
| View | View |
How much West System 420 Aluminum Powder do I add to epoxy?
What does aluminum powder do in epoxy?
What is the difference between West System 420 and 422?
Guides for this product
Marine Filler Types: Complete Guide to Fairin...
Marine Filler Types: Complete Guide to Fairin...
