Butyl (IIR) Isoprene® is a copolymer composed of isobutylene and a little bit of isoprene. The isoprene are double-bonded to provide cross-linking during vulcanization. Butyl offers outstanding resistance to heat aging, ozone/weather, chemical attack, abrasion and tearing and is gas impermeable. Excellent electrical insulation performance. Recommended for general purpose applications, vacuum, and low compression set.
Engineered Seal Products has the expertise and inventory for your butyl (IIR) o-ring applications. For over 50 years, ESP has been the leading engineering, quality, and supply chain choice for both standard and custom sealing applications. A seal, no matter the application, has to do just that.
Also Know As:
Butyl, IIR, Isoprene®, Exxon Butyl®, Polysar Butyl®, Esso Butyl®