ASTM D2000 Type

TYPE & CLASS

Type is based upon temperature resistance (degrees F). Class is based upon oil resistance (volume change, #3 oil).

158 212 257 302 347 392 437 482 527
10 FK HK
20
30 CH
40 BG
60 BF
80 BE CE GE
100
120 BC
140
N/A AA BA CA

 

 AA Natural rubber, reclaimed rubber, SBR, butyl, EPDM, polyisoprene
 BA Ethylene propylene, high-temperature SBR & butyl  compounds
 BC Chloroprene (NEOPRENE)
 BE Chloroprene (NEOPRENE)
 BF NBR (Buna “N” or nitrile)
 BG NBR (Buna “N” or nitrile)
 CA EPDM
 CE Chlorosulfonated Polythylene (HYPALONTM)
 CH Epichlorohydrin (ECO), NBR
 FK Fluorosilicone
 GE Silicone
 HK Fluoroelastomer (VITONTM, FLUORELTM, etc.)