High Precision Rubber Seal Standard EPDM NBR HNBR FKM Butyl...
The abbreviation IIR stands for isobutylene isoprene rubber. Polyisobutene, also known as PIB or polyisobutene, is the homopolymer of isobutylene, or 2-methyl-1-propene, on which butyl rubber is based. Butyl ru