ABR

Acrylate-butadiene rubber

ACM

Copolymer of ethyl or other acrylates and a small amount of a monomer which facilitates vulcanization

AECO

Terpolymer of allyl glycidyl ether, ethylene oxide and epichlorhydrin

AEM

Copolymer of ethyl or other acrylate and ethylene

AFMU

Terpolymer of tetrafluoroethylene, trifluoronitromsomethane and nitrosoperfluorobutyric

ANM

Copolymer of ethyl or other acrylate and acrylonitrile

AU

Polyester urethane

BIIR

Bromo-isobutene-isoprene rubber (brominated buytl rubber)

BR

Butadiene rubber

CFM

Polychlorotrifluoroethylene

CIIR

Chloro-isobutene-isoprene rubber (chlorinated rubber)

CM

Chlorinated polyethylene

CO

Epichlorhydrin rubber

CR

Chloroprene rubber

CSM

Chlorosulphonated polyethylene

ECO

Ethylene oxide and epichlorhydrin copolymer

EAM

Ethylene-vinyl acetate copolymer

EPDM

Terpolymer of ethylene, propylene and a dienne with the residual unsaturated portion of the diene in the side chain

EPM

Ethylene-propylene copolymer

EU

Polyether urethane

FFKM

Perfluoro rubber of the polymethylene type having all substituent groups on the polymer chain either fluoro, perfluoroalkyl or perfluoroalkoxy groups

FKM

Fluororubber of the polymethylene type having substituent fluoro and perfluoroalkoxy groups on the main chain

FVMQ

Silicone rubber having fluorine, vinyl and methyl substituent groups on the polymer chain

GPO

Polypropylene oxide rubber

IIR

Isobutene-isoprene rubber (butyl rubber)

IM

Polyisobutene

IR

Isoprene rubber (synthetic)

MQ

Silicone rubber having only methyl substituent groups on the polymer chain

NBR

Nitrile-butadiene rubber (nitrile rubber)

NIR

Nitrile-isoprene rubber

NR

Natural rubber

PBR

Pyridine-butadiene rubber

PMQ

Silicone rubber having both methyl and phenyl groups on the polymer chain

PSBR

Pyridine-styrene-butadiene rubber

PVMQ

Silicone rubber having methyl, phenyl and vinyl substituent groups on the polymer chain

Q

Rubber having silicone in the polymer chain

SBR

Styrene-butadiene rubber

T

Rubbers having sulphur in the polymer chain (excluding copolymers based on CR)

VMQ

Silicone rubber having both methyl and vinyl substituent groups in the polymer chain

XNBR

Carboxylic-nitrile butadiene rubber (carboxynitrile rubber)

XSBR

Carboxylic-styrene butadiene rubber

Y

Prefix indicating thermoplastic rubber

YBPO

Thermoplastic block polyether-polyester rubbers