Rubber Products
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About Material
Physical Nature of Rubber Composition
Gerneria
Description
Natural
Rubber
Styene-
butadiene
Rubber
Butyl
Rubber
Ethylene
Propylene
Rubber
Nitrile
Rubber
Chloroprene
Rubber
Hypalon
Urethane
Rubber
Silicone
Rubber
SEP
Rubber
Fluoroe-
lastmer
Chlorinated
Polyethylene
ASTM
Abbreviation
NR
SBR
IIR
EPDM
NBR
CR
CSM
LI
Si
SEP
FPM
CPE
Sp.Gr. of
Rubber
0.93
0.94
0.91
0.86
1.00
1.23
1.18
1.23
0.98
0.95
1.85
1.22
Hardness
Range JISA
30~100
30~100
30~90
30~85
30~90
25~95
45~95
30~100
30~80
40~70
60~90
60
Tensile
Strength
O
O
O
X
O
O
Elongation
O
O
O
O
O
O
X
O
O
Resilience
O
O
O
Abrasion
Resistance
O
O
O
X
O
Tear
Strength
O
O
O
O
X
O
O
Compression
Set
O
O
O
O
O
O
Flex
Resistance
O
O
O
O
O
O
Aging
Resistance
O
O
O
Light
Resistance
O
O
O
O
Ozone
Resistance
X
X
O
X
O
O
Fire
Resistance
X
X
X
X
X
O
O
X
O
O
Heat
Resistance
O
O
O
X
O
Low-
Temperature
Resistance
O
O
O
O
O
Ray
Resistance
O
X
X
O
Gas
Permeabitity
O
O
O
O
O
Electric
Insulation
O
O
O
O
Rubber
Offen
siveness
O
O
O
O
O
O
O
O
O
O
Volume
(ohm/cm)
1010~
1015
1010~1015
1016~1018
1012~1015
1010~1011
1011~1012
1014
109~1012
1011~1015
1011~1015
1015~1018
1011~1013

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