Butyl Rubber (IIR) is the copolymer of isobutylene and a small amount of isoprene. The primary attributes of butyl are excellent impermeability/air retention and good flex properties, We carry full rolls of 1/16″, 1/8″, and 1/4″ at 48″ widths, always in stock and available for your custom gasket requirements.

AB-465 Butyl Physical Properties

Polymer: Butyl (IIR)
Hardness: 60D Shore A
Tensile: 1000 PSI
Elongation: 400%
Color: Black
Temp. Range: -35C – 100C