Symbol

Common name

Formula

NR

Natural rubber

Natural polyisoprene

IR

Isoprene

Synthetic polyisoprene

BR

Butadiene

Polybutadiene

SBR

Butadiene-styrene

Styrene and butadiene copolymer

NBR

Nitriles

Acrylic nitrile and butadiene copolymers

IIR

Butyl

Isoprene and isobutylene copolymers

EPDM

-

Terpolymère of ethylene, propylene and a diene

CR

Chloroprene

Polychloroprene

CSM

-

Chlorosulfoné polyethylene

FPM

Fluorocarbonaceous

Rubber with alkylfluorés or alkoxyfluorés side groups

PTR

Polysulphide

Polysulphide

PU

Polyurethane

Polyesteruréthanne or polyetheruréthanne

VMQ

Silicone

Polysiloxane with side groups methyl and vinyl

FVMQ

Fluorinated silicone

-

ACM

Polyacrylic

Ethyl acrylate copolymer

CO

Epichlorhydrine

Polychlorométhyloxyrane

ECO

Epichlorhydrine copolymer

Oxide copolymer of ethylene or oxyrane and chlorométhyloxyrane