Alpha Systems 862405 All-Purpose Butyl Tape, 1/8" x 3/4" x 35"

Ideal for use as a gasket under trim and rail pieces on RVs, the butyl tape installs quickly and makes sure there are no gaps in the seal. Features a non-drying compound that has excellent resistance to water, weather, and air intrusion. Well-suited for weatherproofing in marine and RV assemblies, roof seam sealing, construction of curtain wall panels, and duct sealing. Applicable in temperatures from -5° to 120°F.