Page 221 - Handbook of Plastics Technologies

ELASTOMERS

ELASTOMERS 4.13

TABLE 4.3 Types of Conventional Rubbers and Their Abbreviations
ASTM
1418
Description Names abbrev.
Chloropolyethylene rubber Chlorinated CM
polyethylene
Chlorosulfonylpolyethylene rubber Chlorosulfonated CSM
polyethylene, Hypolon ®
Copolymers of ethylene and vinyl acetate EVA EAM
Terpolymer of ethylene, propylene, and a diene with Ethylene-propopylene-diene- EPDM
the residual unsaturated portion of the diene in the monomer rubber
side chain
Copolymers of ethylene and propylene Ethylene propylene rubber, EPR EPM
Perfluoro rubbers of the poly- methylene type having Fluoroelastomer FFKM
all substituent groups on the polymer chain either
fluoro, perfluoroalkyl, or perfluoroalkoxy groups
Fluoro rubber of the polymethylene type having Fluoroelastomer FKM
substituent fluoro and perfluoroalkyl or
perfluoroalkoxy groups on the polymer chain
Ethylene oxide (oxirane) and chloromethyl oxirane Epichlorohydrin rubber, Hydrin ® ECO
(epichlorohydrin) copolymer
Bromoisobutene-isoprene copolymer Bromobutyl rubber BIIR
Poly1-4-cis-butadiene Butadiene rubber BR
Chloroisobutene-isoprene copolymer Chlorobutyl rubber CIIR
Polychloroprene Neoprene, CR
poly(chlorobutadiene)
Isobutene-isoprene copolymer Butyl rubber IIR
Polyisoprene, synthetic Synthetic natural rubber IR
Acrylonitrile-butadiene copolymer Nitrile rubber, Buna N NBR
Natural rubber Natural polyisoprene NR
Styrene-butadiene rubber GRS SBR
Carboxylic-sytrene-butadiene rubber Carboxy SBR XSBR
Carboxylic-acrylonitrile-butadiene rubber Carboxy NBR XNBR
Silicone rubber having fluorine, vinyl, and methyl Fluorosilicone rubber FVMQ
substitute groups on the polymer chain
Silicone rubber having both methyl and vinyl Silicone rubber, Silastic ® VMQ
substituent groups on the polymer chain
Polyester urethane rubber Millable polyurethane rubber (not AU
thermoplastic polyurethane
Polyether urethane rubber EU
elastomers (TPUs)
®
A rubber having either a -CH2-CH2-O-CH2-O- Polysulfide rubber, Thiacol OT
CH2-CH2- group or occasionally an -R- group, rubber
where R is an aliphatic hydrocarbon between the
polysulfide linkages in the polymer chain

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