Types of Elastomers:
Rubber must be vulcanized to obtain real elastic properties.
Unsaturated rubbers that can be vulcanized are
Natural Rubber (NR)
Butyl rubber (copolymer of isobutylene and isoprene, IIR)
Halogenated butyl rubbers (Chloro Butyl Rubber: CIIR; Bromo Butyl Rubber: BIIR)
Styrene-butadiene Rubber (SBR)
Nitrile Rubber (NBR), also called buna N rubbers
Hydrated Nitrile Rubbers (HNBR) Therban® and Zetpol®
Chloroprene Rubber (CR), polychloroprene, Neoprene, Baypren etc.
Saturated Rubbers that cannot be cured by sulfur vulcanization:
EPM (Ethylene propylene rubber) and EPDM rubber (Ethylene propylene diene rubber )
Epichlorohydrin rubber (ECO)
Polyacrylic rubber (ACM, ABR)
Silicone rubber (SI, Q, VMQ)
Fluorosilicone Rubber (FVMQ)
Fluoroelastomers (FKM, FPM) Viton®, Tecnoflon®, Fluorel® and Dai-El®
Tetrafluoro ethylene/propylene rubbers (FEPM)
Chlorosulfonated Polyethylene (CSM), (Hypalon®)
Ethylene-vinyl acetate (EVA)
Other types of elastomers are:
Thermoplastic Elastomers (TPE), for example Hytrel®, Santoprene® etc.