Wollastocoat® For carbon black replacement in fluoroelastomers
Wollastocoat® wollastonite is a fine particle size, low aspect ratio calcium silicate which has been chemically modified.
Wollastocoat® is particularly recommended for replacing carbon black in fluoroelastomer O-ring and gasket applications.
Replacing carbon back N990 by coated wollastonite Wollastocoat® M1250 (at the same phr) in a fluoroelastomer (FKM) with a bisphenol cure system:
- Improves compression set
- Shortens curing times
- Maintains torque
We offer a full range of bespoke formulation and technical and process support services to help you match the right mineral grade to your application requirement.