BUTYL NITRILE

Butyl rubber is also called Isobutylene-isoprene, or IIR, and it was developed in the 1940s as a synthetic rubber.

Because of its low gas permeability and its low resilience, it is perfect for products such as high-pressure/vacuum-sealing applications, vibration damping, and shock damping.
It is very resistant to ozone, heat, and weathering, and you can even use it to dilute both alkalis and acids. However, it is not a good product to use in petroleum- or mineral-based fluids, and you can often find it in seals, O-rings, bottle closures, diaphragms, liners, gaskets, inner tubes, and even speaker surrounds.

Butyl Applications