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generic elastomeric properties

Common o-ring compounds for high and low temperature gaskets and seals, water resistance, ozone resistance and gas impemeability.  Many other properties of o-rings.

Generic Elastomeric Properties

Physical Property

Butyl
Ethylene
Propylene EPDM

Flouro-carbon
FKM
Natural Rubber
NR

Neoprene CR
Nitrile Butadiene
NBR

Silicone VMQ
Styrene Butadiene
SBR

Urethane
Polymer Specific Gravity
0.9
0.88
1.4-1.9
0.93
1.23
1
0.95
0.93
1.05
Durometer Limits
30-100
40-90
65-90
30-100
20-90
40-100
25-80
30-100
30-100
Tensile Strength, PSI
0-1900
0-2400
0-2000
0-3200
0-3000
0-3000
0-1450
0-3000
0-8000
Elongation %
0-625%
0-500%
0-300%
0-700%
0-800%
0-700%
0-700%
0-500%
0-600%
Tear Resistance
Fair
Fair
Fair
Very Good
Good
Good
Good
Good
Very Good
Weather Resistance
Very Good
Very Good
Very Good
Fair
Very Good
Fair
Very Good
Fair
Very Good
Ozone Resistance
Very Good
Very Good
Very Good
Poor
Very Good
Poor
Very Good
Poor
Very Good
Water Resistance
Very Good
Very Good
Good
Very Good
Good
Very Good
Good
Very Good
Fair
Oil & Gasoline Resistance
Poor
Poor
Very Good
Poor
Good
Very Good
Poor
Poor
Very Good
Solvent Resistance: Aliphatic Hydrocarbons
Poor
Poor
Very Good
Poor
Good
Very Good
Poor
Poor
Very Good
Solvent Resistance: Aromatic Hydrocarbons
Poor
Fair
Very Good
Poor
Poor
Good
Poor
Poor
Fair
Brittle Point (°F)
-80
-80
-60
-80
-50
-65
-180
-80
-60
Stiffening Point (°F) (avg)
-25
-35
-15
-40
-10
-10
-150
-35
-20
Compression Set
Fair
Fair
Good
Good
Fair
Good
Very Good
Good
Very Good
Temp Resistance:                  
To 212°F
Very Good
Very Good
Very Good
Fair
Good
Good
Very Good
Good
Good
To 350°F
Good
Good
Very Good
Poor
Poor
Poor
Very Good
Poor
Poor
To 450°F
Poor
Poor
Very Good
Poor
Poor
Poor
Very Good
Poor
Poor
Gas Impermeability
Very Good
Good
Very Good
Good
Good
Good
Fair
Fair
Good
Abrasion Resistance
Very Good
Good
Fair
Very Good
Good
Good
Fair
Very Good
Very Good
Flex Resistance
Good
Good
Good
Very Good
Good
Good
Very Good
Good
Good

This information gives typical properties and is not to be taken as a warranty or any representation for which we assume legal responsibility, nor as permission or recommendation. It is offered soley for your consideration,investigation, and verification.

Viton®and Kalrez® are registered trademarks of DuPont Performance Elastomers.