Rubbers Property Chart

COMMON NAME NATURAL RUBBER SBR BUNA – S BUTYL BUTADIENE EPDM NEOPRENE CPE NITRILE BUNA – N URETHANE HYPALON EPICHLOROHYDRIN ACRYLIC SILICONE FLUORO – SILICONE
CHEMICAL NAME Polyisoprene Styriene
Butadiene		 Isobutylene
Isoprene		 Polybutadiene Ethylene
Propylene		 Chloroprene
Chlorinated
Polyethylene
 Acrylonitrile
Butadiene		 Polyester/
Ether		 Chlorosulfonated
Polyethylene		 Polyalkylene Oxide Polyacrylate Polysiloxane Fluoral
Polysiloxane
ASTM D-1418 DESIGNATION NR SBR IIA BR EPDM CR CM NBR AU/EU DSM CO/ECO ACM/ANM Psi/Si/PVSI IVSi
TENSILE STRENGTH (psi) 3000+ 2000+ 2000+ 2500+ 2000+ 2000+ 2500+ 2000+ 3000-5000 2500+ 2500+ 2200+ 1200+ 1500+
HARDNESS RANGE (Durometer A) 30-90 Shore 40-90 Shore 40-75 Shore 40-80 Shore 30-90 Shore 15-95 Shore 60-90 Shore 40-95 Shore 30 – 75D Shore 40-90 Shore 40-90 Shore 40-90 Shore 20-85 Shore 60-90 Shore
SPECIFIC GRAVITY 0.93 0.94 0.92 0.94 0.86 1.23 1.16-1.32 1.00 1.02-1.20 1.12 1.27-1.35 1.10 1.14-2.05 1.30-2.30
ADHESION TO METALS Excellent Excellent Good Excellent Good Excellent Fair to Good Excellent Excellent Excellent Fair to Good Very Good Excellent Excellent
ADHESION TO FABRICS Excellent Good Good Good Good Excellent Fair Good Very Good Good Fair to Good Very Good Excellent Excellent
TEAR RESISTANCE Very Good Fair Good Good Fair Good Fair Fair Excellent Fair Fair to Good Fair Poor Poor to Fair
ABRASION RESISTANCE Excellent Good to Excellent Good Excellent Good to Excellent Very Good Good Good Outstanding Very Good Fair to Good Fair Poor Poor
COMPRESSION SET Excellent Good Fair Very Good Good Good Good Good Good Fair Poor Good Very Good Good
RESILIENCE (HOT)
RESILIENCE (COLD)		 Excellent
Excellent		 Good
Good		 Poor
Very Good		 Outstanding
Excellent		 Good
Very Good		 Good
Very Good		 Fair
Good		 Fair
Fair		 Good
Good		 Fair
Good		 Fair
Fair		 Poor
Poor		 Excellent
Excellent		 Excellent
Excellent
DIELECTRIC STRENGTH Excellent Good Good Good Outstanding Good Excellent Poor Excellent Very Good Good Fair Good Good
ELECTRICAL INSULATION Good to Excellent Good Good Good to Excellent Outstanding Fair to Good Good Poor Good Good Good Fair Excellent Excellent
IMPERMEABILITY TO GASES Good Fair Outstanding Good Good Good Excellent Excellent Good Excellent Excellent Good Fair Good
ACID RESISTANCE (DILUTED) Fair to Good Fair to Good Excellent Fair to Good Excellent Good Excellent Good Fair Excellent Fair to Good Fair Excellent Excellent
ACID RESISTANCE (CONCENTRATED) Fair to Good Fair to Good Good Fair to Good Good Fair Good Good Poor Good Fair Poor Fair Fair
RESISTANCE
ALPHATIC Poor Poor Poor Poor Poor Fair to Good Good Excellent Good Fair to Good Excellent Excellent Poor Excellent
AROMATIC Poor Poor Poor Poor Poor Fair Fair Good Fair Fair Good Fair to Poor Poor Excellent
OXYGENATED (Ketones) Poor Poor Good Poor Excellent Poor to Fair Fair Poor Poor Poor to Fair Poor Poor Poor Poor
LACQUER SOLVENTS Poor Poor Fair to Good Poor Fair to Good Poor Fair Fair Poor Poor Fair Poor Poor Poor
SWELLING IN LUBRCAT. OIL Poor Poor Poor Poor Poor Good Good Very Good Good Good Excellent Excellent Fair Excellent
OIL & GASOLINE Poor Poor Poor Poor Poor Good Good Excellent Good Good Excellent Fair Fair Excellent
ANIMAL OILS Poor Poor Fair Poor Fair Fair Fair Excellent Fair Fair Excellent Excellent Fair Excellent
WATER ABSORPTION Very Good Very Good Very Good Very Good Excellent Good Very Good Good Poor Good Good Good Excellent Excellent
OXIDATION Good Fair Excellent Good Excellent Good Excellent Good Very Good Very Good Good Excellent Excellent Excellent
OZONE Poor Poor Excellent Poor Outstanding Fair Excellent Poor Excellent Outstanding Excellent Excellent Excellent Excellent
SUNLIGHT AGING Poor Poor Very Good Poor Outstanding Very Good Outstanding Poor Very Good Outstanding Good Good Excellent Excellent
HEAT AGING Fair Good Very Good Fair Excellent Good Very Good Very Good Good Very Good Very Good Excellent Outstanding Outstanding
LOW TEMPERATURE Very Good Very Good Poor Very Good Excellent Good Good Fair to Good Fair to Excellent Good Very Good Poor Outstanding Outstanding
FLAME Poor Poor Poor Poor Poor Good Good Poor Poor Good Poor to Fair Poor Fair Excellent
VEGETABLE OILS Poor Poor Fair Poor Fair Good Fair Excellent Fair Poor Excellent Good Good Excellent
CHLORINATED HYDROCARBONS Poor Poor Poor Poor Poor Poor Poor Fair Fair to Good Poor to Fair Good to Excellent Poor Poor to Good Good to Excellent