Properties of Rubber

Key

E = Excellent   G = Good   F = Fair   P = Poor

 Natural RubberSBRButylButadieneEPDMNitrileSiliconeViton
Specific Gravity0.920.940.920.910.860.980.98
1.60
1.85
Hardness Range
(Shore A)
30-10035-10030-9045-8030-9030-10025-9055-95
Tensile Strength
Max (psi @ Rm. Tep.)
50003000250025003000300015003000
Elongation
Max (% @ Rm. Temp.)
750600700500600600800450
ResilienceEGP-FEGF-GF-GF
Compression SetGGP-FFGGG-EG-E
Impermeability to GasesFFEFFGP-FG-E
Flex Cracking ResistanceFGGEGFF-EG
Tear StrengthEFGGF-GF-GP-FF
Abrasion ResistanceEG-EGEG-EG-EP-FF-G
Impact StrengthEEGGGF-GP-GF
Cut Growth ResistanceEGEF-GGGP-FP
Oxidation ResistanceF-GF-GEF-GG-EF-GEe
Ozone ResistancePPG-EPEPEE
Weathering ResistanceFFEFEF-GEE
Sunlight ResistanceP-FFEFEP-FEE
Water ResistanceEG-EGEEEEG-EGG-E
Flame RetardancePPPPPPF-GG-E
Heat ResistanceFF-GGP-FG-EGEE
Low Temp FlexibilityG-EGF-GG-EG-EF-GEF-G
Oil and GasolinePPPPPG-EP-FE
Animal & Vegetable OilsFFG-EFGG-EF-GE
AlchoholsGGGGF-GF-GGF-E
AlkaliesFFEFG-EG-EPF-G
AcidsF-GF-GG-EF-GGGFG
Aliphatic Hydrocarbon SolventsPPPPPEP-FE
Aromatic Hydrocarbon SolventsPPPPPF-GP-FE
Oxygenated SolventsGGG-EGG-EPFP

^ Table data originally published in an article titled Engineering Properties of Elastomers, published in the May 28, 1981 issue of the PLANT ENGINEERING magazine