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Chemical Resistance
Rubber Properties
Elastomer Chemistry
Elastomer History
Shelf Life
Resources
Material Does Matter
O-Rings on the Web
ASTM D-2000
Properties Explained
Tolerances
Style Codes 

 

 

 

Age Resistance Generally Associated With
Products Fabricated From Various Rubbers

 Type of Rubber Common or
Trade Name		 ASTM D1418
Abbreviation		 ASTM D2000
Abbreviation		 MIL-STD-417
Abbreviation
Maximum (Up to 20 Years)
 Silicone  Silicone  Q  FE  TA
 Fluorsilicone  Silastic LS  FVMQ  FK  TA
 Polysufide  Thiokol   T  BK   SA
 Fluorocarbons   Fluorel, Viton  FKM  HK   --
 Polyacrylate   Acrylic  ACM, ANM  DF, DH   TB

 

Type of Rubber Common or
Trade Name		 ASTM D1418
Abbreviation		 ASTM D2000
Abbreviation		 MIL-STD-417
Abbreviation
Average (5 to 10 Years)
Chlorosulfonated
polyethylene		 Hypalon CSM CE --
Isobutylene/
Isoprene		 Butyl IIR AA, BA RS
Polychloroprene Neoprene CR BC, BE SC
Polyether Urethane Urethane EU BG --
Polypropylene oxide Propylene oxide GPO -- --
Ethylene/propylene
diene		 Ethylene propylene terpolymer  EPDM  BA, CA  --
Ethylene/propylene Ethylene propylene
copolymer		  EPM  BA, CA --
Epichlorophydrin
homopolymer		 Hydrin 100, Herclor H  CO   --   --
Epichlorophydrin
ethylene oxide		 Hydrin 200, Herclor C  ECO   --   --

 

 Type of Rubber Common or
Trade Name		 ASTM D1418
Abbreviation		 ASTM D2000
Abbreviation		 MIL-STD-417
Abbreviation
Minimum (2 to 5 Years)
1Butadiene/
acrylonitrile		 Nitrile, NBR NBR BF, BG, BK, CH SB
Butadiene/styrene SBR SBR AA, BA RS
Cis-polybutadiene Butadiene BR AA RN
Cis 1, 4, polyisoprene Natural, pale, crepe NR AA RN
Cis 1, 4, polyisoprene Synthetic natural IR AA RN
Polyester urethane  Urthane   AU  --  --

 

*NBR, when compounded for o-ring seals, may have a shelf life as high as 10 years when aging resistance requirements are specified in the specification.

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