Elastomeric Chart

Properties of Selected Elastomers

ELASTOMER ABBREVIATIONS
NR Natural Rubber CR Polychloroprene (Neoprene)
IIR Butyl NBR Nitrile (Buna-N, Hycar®)
EPDM EPDM BR Polybutadiene (Taktene®)
CO/ECO Epichlorohydrin (Hydrin®) IR Polyisoprene
AEM Ethylene/acrylic (Vamac®) SBR SBR (Buna-S, GRS)
FKM Fluoroelastomer (Viton®, Dyneon®, Aflas®) VMQ Silicone
FVMQ Fluorosilicone AU/EU Urethane
CSM Chlorosulfonated polyethylene (Hypalon®) FFKM Perfluoroelastomer

RATINGS CODE E Excellent G Good F Fair P Poor
  NR IIR EPDM CO/ECO AEM FKM FVMQ CSM CR NBR BR IR SBR VMQ AU/EU FFKM
HARDNESS RANGE (SHORE A) 30-95 35-80 30-90 40-90 40-90 60-90 60-90 40-90 25-95 30-90 40-80 30-95 40-90 20-85 45-100 65-95
TENSILE STRENGTH MAX PSI 4000 2500 3000 2500 2500 3000 2000 3000 3000 3000 2500 3500 3000 1500 8000 2000
ELONGATION MAX % 750 700 600 400 700 450 700 600 600 600 500 750 600 800 750 300
RESILIENCE E P-F G F F F G F-G G-E F-G E E G F-G G G
COMPRESSION SET G F G F G G-E G F F-G G F-G G G G-E G G
IMPERMEABILITY TO GASES F-G E F-G E F E G G-E G G-E F-G F-G F F P-F E
ABRASION RESISTANCE E G G-E F-G G G P G-E G-E G E E G-E p E G
OZONE RESISTANCE P E E E E E E E F-G P P P p E E E
HEAT RESISTANCE F G E G-E G-E E E G G G F F G E G E
LOW TEMPERATURE FLEXIBILITY G-E F E G P-F F-G E F-G F-G F-G G-E G G E G F-G
CHEMICAL RESISTANCE:
OIL AND GASOLINE P P P G-E F E E G G E P P P F G E
ANIMAL AND VEGETABLE OILS P-F G F-G G-E G-E E E F-G G E P-F P-F P-F F-G F-G E
AROMATIC HYDROCARBONS P P P G P-F E E F F G P P P P P E

TRADEMARKS

Hydrin® - Zeon Chemicals Inc
Aflas® - Asahi Glass Company
 Hycar® - B. F. Goodrich Company
Taktene® - Bayer Inc.
Viton®, Vamac® and Hypalon® are registered trademarks of DuPont Performance Elastomers.
Fluorel®, Dyneon® - are registered trademarks of Dyneon LLC, a 3 M Company.

Disclaimer: The information printed herein is furnished free of charge and is based on technical data that Pelmor® Laboratories believes to be reliable. It is intended for use by persons having technical skill, at their own discretion and risk. While the information contained herein is believed to be correct, Pelmor® Laboratories makes no representation as to accuracy of it and assumes no liability in connection with any use of this information. Nothing contained herein is to be taken as a license to operate under or as a recommendation to infringe any patents.