Rubber Selection

 

Properties

NR

SBR

NBR

EPDM

CR

SILICONE

VITON

Hardness, A

30-95

40-95

40-95

30-85

30-90

40-80

50-95

Heat
Resistance:
Max Cont.
Deg. C

75

85

100

130

95

205

205

Max.
Intermittent
Deg. C

105

115

130

150

125

300

300

Low Temp
Resistance

-60

-55

-20

-50

-35

-60

-20

Oxidation
Resistance

Fair

Fair

Good

Excellent

Very Good

Excellent

Out-standing

Ozone and
Weathering

Poor

Fair

Fair

Out-standing

Very Good

Out-standing

Out-standing

Oil Resistance

Poor

Poor

Excellent

Fair

Good

Excellent

Excellent

Solvent: -
Alcohol

Good

Good

Good

Good

Good

Good

Good

- Acetone

Fair

Fair

Poor

Good

Fair

Fair

Poor

- Benzene

Poor

Poor

Poor

Poor

Poor

Poor

Good

Chemical: -
Acids

Good

Good

Good

Good

Good

Fair

Excellent

- Bases

Good

Good

Fair

Good

Fair

Fair

Good

Physical Strength

Excellent

Good

Good

Good

Good

Poor

Good

Compression Set

Good

Good

Good

Good

Good

Good

Good

Tear and
Abrasion

Excellent

Good

Good

Good

Good

Poor

Good

Resilience

Excellent

Good

Good

Very Good

Very Good

Fair

Poor

Gases
Permeability

Poor

Fairly Low

Good

Fairly Low

Very Good

Good

Very Low

Electrical
Strength

Excellent

Excellent

Poor

Excellent

Good

Excellent

Good

Flame Resistance

Poor

Poor

Poor

Poor

Self Extinguishing

Good

Self Extinguishing

Water
Resistance

Very Good

Fair

Good

Excellent

Good

Good

Good