Moss-Seal has an inventory of O-rings and O-ring cord which includes a wide variety of compounds with specific performance characteristics. This chart provides an overview for you to compare compounds.

List of common compounds:

Nitrile (Buna-N)
Hydrogenated Nitrile
Ethylene Propelene
Fluorocarbon (Viton)
Neoprene (Chloroprene)

Butyl (Isobutylene)
Silicone
Fluorosilicone
Polyacrylate
Styren E-Butadiene
Natural Rubber