Seal N Flex FC (Fast Cure)

Bostik Seal N Flex FC (Fire Caulk) is a fast curing, high performance one component polyurethane elastomeric joint sealant/ adhesive.

When fully cured Seal N Flex FC will provide a tough, flexible seal capable of cyclic expansion and compression to 50% (25%) of original joint width without primer on most substrates.

Seal N Flex FC is unaffected by ultra violet radiation, atmospheric contamination or pollution. Its excellent weatherability enables it to retain its original properties after years of exposure.