Natural rubber and most of synthetic rubbers, such as styrene butadiene rubber, neoprene latex and mixing rubber can be reinforced by colloidal silica. For a certain volume of rubber, 20% of the rubber can be saved because of the increased elasticity.
2.5% colloidal silica added to the dry rubber strengthen by 20% of the multihole air-foam rubber.
Recommened types: HSDW-3030