Fumed Silica

$11.95

Helps prevent sag or run off on vertical surfaces
Used as an adhesive or putty
Can be used with other fillers such as glass bubbles and/or milled fibers
Compatible with polyester, vinyl ester and epoxy resins.
Also known as Cabosil or Aerosil.
1 lb. and 10 lbs. come bagged in box
Ships within one business day

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Sku: 15722

Description
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FAQ

Fumed silica is an extremely fine powder used as a thickening agent. It is often used with polyester, vinyl ester or epoxy resins. It is great for making fillet putty, thickening epoxy for a better glue consistency, and for use below the waterline. Resin drains off a vertical surface but by adding Fumed Silica, the resin can be made to stay in place.

Fumed Silica can also be mixed with milled fibers for structural putty and/ or glass microspheres/bubbles for a sandable putty. It is added to the resin at approximately a one-to-one ratio by volume. You may use more or less to suit your application.

Excellent customer service.

Great place to order product for any project this product worked great.

Great value, worked perfectly.

Building a fuel celll into my sailboat with vinyl ester resin. This worked perfectly with some milled glass to filet the coosaboard before glassing.

Fumed silica

Worked great to thicken gel coat. Container (4oz) would probably thicken a gallon or more. I only needed a small amount.

DOWNLOAD: SDS

Question: What is fumed silica used for?

Answer: Fumed silica is used as a thickening agent, bonding, filleting and filling. It provides high strength and low density.

Question: Can fumed silica be mixed with other fillers?

Answer: Yes, it is recommended to be mixed with other fillers such as glass bubbles and milled fibers. Fumed silica on its own is difficult to sand but with glass bubbles it will be easier.