IIR (Butyl Rubber)

Characteristics
Butyl rubber is a copolymer of isobutylene with a small amount of isoprene. It is like EPDM, possessing excellent resistance to chemical and polar fluids, as well as outstanding electrical insulation and good ozone resistance. The outstanding characteristics of this rubber are its low permeability to gas and good shock absorption. These properties have made butyl rubber a multipurpose polymer.

Service Temperature
For IIR the Service Temperature can be designed from -55 C to 100 C.

Hardness
50 to 70 Shore A are available.

Application
Butyl rubbers are suitable for producing rubber parts for chemical medicine and high vacuum service.Not recommended for service in petroleum solvents, kerosene, and aromatic hydrocarbons.