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WEST System 406 Colloidal Silica Filler

$20.67In StockSee Product Details

Home / Epoxy and Adhesives / Epoxy Fillers and Additives

WEST System

WEST System 406 Colloidal Silica Filler

$20.67In StockSee Product Details

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Product Details

WEST SYSTEM 406 Colloidal Silica is a thickening additive used to control the viscosity of the epoxy and prevent epoxy runoff in vertical and overhead joints. Made with fine silica particles, this filler is ideal for both be used to thicken and strengthen WEST SYSTEM 105 Epoxy Resin, G/flex 650 Toughened Epoxy, and G/5 5-Minute Epoxy.

406 Silica is a strong filler that creates a smooth mixture ideal for general bonding, yet versatile enough for a variety of marine applications, including fillets, abrasion resistance, structural fortification, and thickening epoxy.

West System colloidal silica is often used in combination with other fillers to improve the strength, abrasion resistance, and consistency of fairing compounds, resulting in a tougher smoother surface. Cures to an off-white that can be sanded. Available in 1.7 oz, 5.5 oz, and 10 lb Containers.

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4.8

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11 to 10 of 10 Reviews

3 Ratings-Only Reviews

Questions

1 - 10 of 11 Questions

Q: How much 406 do you need to thicken approx 1 gallon of 105 to get a peanut butter consistency? (or not quite peanut butter, but so it can be troweled with a groove trowel)

5 years ago

1 Answer

A: You must be looking to do an incredible amount of silica work to be mixing up a gallon of this stuff. From my experience doing four shots from the West pump will yield about 1/2 of a 1/2 quart mixing cup at the consistency you are asking about. Just guessing but mixing up 4 or 5 of these cups burns up about a third of a 5.5oz container.

5 years ago

Helpful?

Q: can you use West 406, 405 and 410 with TotalBoat epoxy and hardener?

7 years ago

2 Answers

A: yes absolutely

Anonymous6 years ago

Helpful?

Q: How is 406 on sanding i know 410 would be better for sanding but i am lookimg for a white color?

7 years ago

1 Answer

A: The 406 silica will sand OK, just a little harder than the 410.

7 years ago

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Q: CAN U SAND THE 406 SILICA AND IF YOU CAN HOW HARD IS IT TO SAND.

7 years ago

1 Answer

A: Yes you can sand epoxy with 406 silica in it. It sands a little easier than just straight epoxy.

7 years ago

Helpful?

Q: Does this product work well to fair a keel joint ?

11 years ago

4 Answers

A: By weight, 406 is really light. 404 is heavy. So when I want to do something that needs beefiness to it I'll use 404 rather than 406. Although not sure about keel work, I use a motor:)

10 years ago

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Q: Will this penetrate wet balsa core in a boat deck or coach roof or does all of the wet wood need to be removed first?

11 years ago

4 Answers

A: West Systems could likely provide a more technical answer, but if you want to get deep penetration into compromised wood, I apply CPES first to stabilize the wood...as much as the wood will soak up...let that cure.. then come back with neat epoxy, then thickened epoxy while the neat epoxy is still damp.

11 years ago

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Q: Are there health risks when using WEST System 406 Colloidal Silica filler?

11 years ago

4 Answers

A: refer to the manufacturer material safety data sheet (MSDS)

11 years ago

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Q: can these products be used for exterior wood?

13 years ago

2 Answers

A: I used it as a filler on a boat project and was happy with the results. I have also used the dust from a sander when I wanted the darker color. This also worked well. Both are easy to sand. Don't think there is any problem with exterior wood.

13 years ago

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Q: can you use it with a color agent ?

13 years ago

4 Answers

A: never tried it - but I would call/email WEST tech support and ask them.

13 years ago

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Q: Does this specific product meet Mil Spec MIL-S-14760?

13 years ago

4 Answers

A: Sorry, I don't know anything about that spec. Ernie Witham

13 years ago

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