Everbuild 145 Polybutene Exterior Rubber Sealant C3 Tube

145 Butyl Sealant is a traditional permanently plastic one component sealant based on Polybutene that provides an effective weatherproof seal in a variety of exterior and interior applications. 145 Butyl Sealant forms a skin in approximately 24hrs but remains permanently plastic underneath. The sealant accommodates joint movement of +/- 5%, is over paintable and exhibits good UV and chemical resistance.