The fluoroelastomeric sponge rubber - Viton Sponge rubber, made from fluoroelastomers combines properties from both material categories and applications which were not realizable in the past are now possible. Sponge Viton / FKM sheeting is:
Sealing of engine bays with large, irregular gap lengths with sponge rubber profiles. The high temperatures prevalent there in combination with oils and grease are no problem for sponge FKM. The light deformability of such profiles is recovering quick.
Due to the cellular structure of FKM / Viton sponge rubber, the heat conductivity is heavily reduced. Thus, applications that require high thermal insulation in conjunction with other extreme properties of fluoroelastomers are conceivable.