TotalBoat Fumed Silica Cabosil Powder Thickener for Epoxy Resin, Polyester Resin, Paint, Silicone, and Varnish (5 Quart)

★★★★★ 4.2 143 reviews

$90.00
Price when purchased online
Free shipping Free 30-day returns

Sold and shipped by school.anne.education
We aim to show you accurate product information. Manufacturers, suppliers and others provide what you see here.
$90.00
Price when purchased online
Free shipping Free 30-day returns

How do you want your item?
You get 30 days free! Choose a plan at checkout.
Shipping
Arrives May 5
Free
Pickup
Check nearby
Delivery
Not available

Sold and shipped by school.anne.education
Free 30-day returns Details

Product details

Management number 214296275 Release Date 2026/04/12 List Price $36.00 Model Number 214296275
Category

TotalBoat Silica Thickener is an extremely fine micron thickening powder. Also called Cabosil or fumed silica, it’s mostly (but not exclusively) used as a thickening agent or additive for epoxy resin and polyester resin. When added to mixed resin components, it creates a smooth, peanut-butter consistency compound or putty that won’t sag when applied to vertical or overhead surfaces. Epoxy thickened with fumed silica makes a great bonding and filleting adhesive, and is ideal for filling cracks, gaps, holes, and voids.Use alone or combine with other fillers. Example: after blending with mixed resin and harder, add TotalBoat Glass Microballoons to create an easy-to-sand fairing compound. Or, add TotalBoat Milled Glass Fibers for even more strength and sag resistance. Epoxy mixed with TotalBoat Silica Thickener cures extremely hard and abrasion resistant. This thixotropic thickening agent can also be used with paint, gelcoat, silicones, acrylics and other materials. Perfect for resin art and crafting.Tips: Always mix a small trial batch of resin and additives to fine tune viscosity, and to assess any impact to epoxy working properties (pot life). Always wear proper safety protection when working with epoxy resin and fillers / additives. Be sure to wash your hands and any exposed skin thoroughly with soap and water afterwards. Compare to West System 406 filler, System Three White Silica Thickener, Cab-O-SIL, and others. All TotalBoat products are formulated for great results and great value. When it comes to epoxy, we know what works.

  • Hydrophilic fumed silica, also known as cabosil or colloidal silica, is a thixotropic additive thickening agent that lets you customize the viscosity of epoxy, polyester resin, paint and more
  • Epoxy thickened with this fine silica powder won’t sag or slump, ideal for vertical and overhead surfaces. Easy to stir into mixed resin and hardener, and easy to sand upon full cure
  • It creates a smooth, strong epoxy compound ideal for bonding, filleting, and filling. Epoxy or polyester resin thickened with silica can be used to fill holes, cracks, and gaps
  • Combine this versatile filler with TotalBoat epoxy and Glass Micro Balloons or Milled Glass Fibers for easy sanding and additional strength
  • Use with gelcoat, paints, acrylics, silicones, rubber, urethanes, adhesives and other materials to prevent sagging. Available in 1 Quart and 5 Quart sizes
UPC 811932022165
Color Clear/Transparent
Model c8522354-b8d4-4dc6-97db-0ea511cf8817
Volume 5 Quarts
Item Form Powder
Viscosity High
Brand Name TotalBoat
Unit Count 1.0 Count
Manufacturer TotalBoat
Material Type Epoxy Resin, Resin, Silicone
Container Type Can
Compatible Material Glass, Rubber
Included Components Silica Thickener
Item Package Quantity 1
Water Resistance Level Water Resistant
Other Special Features of the Product Prevents Sagging, Suitable for Structural Bonding, Filleting, and Filling

Correction of product information

If you notice any omissions or errors in the product information on this page, please use the correction request form below.

Correction Request Form

Customer ratings & reviews

4.2 out of 5
★★★★★
143 ratings | 59 reviews
How item rating is calculated
View all reviews
5 stars
78% (112)
4 stars
6% (9)
3 stars
3% (4)
2 stars
2% (3)
1 star
11% (16)
Sort by

There are currently no written reviews for this product.