| ASTM D1418 DESIGNATION |
ALSO KNOWN AS |
ASTM D2000 TYPE/CLASS |
TEMP RANGE(F) |
HARDNESS RANGE
(SHORE D) |
| NR |
POLYISOPRENE- NATURAL RUBBER |
AA |
-20° TO +220° |
40-90 |
| BR |
POLYBUTADIENE |
AA |
-20° TO +220° |
50-90 |
| SBR |
STYRENE BUTADIENE |
AA. BA |
-60° TO +250° |
50-90 |
| IIR |
ISOBUTYLENE ISOPRENE -BUTYL |
AA,BA,CA |
-70° TO +300° |
50-90 |
| EPDM, EPR |
ETHYLENE PROPYLENE DIENE-NEOPRENE |
AA,BA,CA,DA |
-60° TO +300° |
50-90 |
| CR |
CHLOROPRENE-NEOPRENE |
BC.BE |
-70° TO +250° |
40-95 |
| NBR |
ACRYLONITRILE BUTADIENE |
BF,BG,BK |
-70° TO +250° |
50-95 |
| HNBR |
HYDROGENATED NITRILE-HIGHLY SATURATED NITRILE |
DH |
-70° TO +300° |
50-95 |
| XNBR |
CARBOXYLATED NITRILE |
BF,BG,BK |
-50° TO +250° |
50-95 |
| ECO |
EPICHLOROHYDRIN-HYDRIN |
CH,DK,DJ |
-60° TO +275° |
50-95 |
| VMQ |
POLYDIMETHYLSILOXANE-SILICONE |
FC,FE,GE |
-170° TO +550° |
50-95 |
| FKM |
FLUOROCARBON-VITON, FLUOREL |
HK |
-40° TO +446° |
50-95 |
