|
Raw Material
|
|
Characteristic
|
Natural rubber
NR
|
Styrene
butadiene SBR
|
Ethylene propyle
|
Chloroprene
(neoprene)CR
|
Silicone
MQ.PMQ
|
Fluoro-Carbon
VITON
|
|
Nitrile butadiene
NBR
|
terpolymer
EPDM
|
|
1. Density
|
0.92
|
0.93-0.94
|
1.00-1.20
|
0.86-0.87
|
1.15-1.25
|
0.9-0.98
|
1.85
|
|
2. Mooney viscosity ML
|
90-150
|
30-60
|
30-100
|
50-150
|
45-120
|
Liquid
|
65-180
|
|
1+4(100PullC)
|
|
|
|
|
|
|
|
|
3.Hardness(SHOREA)
|
30-90
|
40-90
|
40-90
|
30-90
|
30-90
|
30-85
|
60-95
|
|
4.Tensile Strength(PSI)
|
4000
|
3500
|
4000
|
3000
|
4000
|
1200
|
2000
|
|
5.Elongation(%)
|
700
|
600
|
600
|
600
|
600
|
700
|
400
|
|
6.Compression
|
●
|
●
|
0-●
|
O-●
|
0-●
|
△-●
|
O-●
|
|
7.Tear Strength
|
●
|
△
|
o
|
△
|
△-O
|
△
|
△
|
|
8.Abrasion Strength
|
●
|
●
|
●
|
o
|
●
|
△
|
o
|
|
9.Elasticity
|
●
|
o
|
o
|
o
|
●
|
△-●
|
0-●
|
|
10.Brittle Point(℃)
|
-50~-70
|
-30~-60
|
-20~-50
|
-40~-60
|
-35~-55
|
-50~-120
|
-10-50
|
|
11.Fluid Strength
|
|
|
|
|
|
|
|
|
*Water
|
×
|
0-●
|
●
|
●
|
●
|
o
|
●
|
|
*Gasoline
|
×
|
x
|
·
|
×
|
o
|
×-△
|
●
|
|
*Natural Oils
|
△-O
|
△-O
|
0
|
0-●
|
o
|
●
|
●
|
|
*Artificial (Synthetic) Lubricants
|
×
|
×
|
0-●
|
×
|
△
|
×
|
|
|
*Alcohol
|
×
|
|
|
●
|
·
|
●
|
|
|
*Toluene
|
×
|
×
|
o
|
△
|
×
|
×-△
|
o
|
|
*Ketones
|
×-O
|
×
|
×-△
|
◎
|
×-△
|
×-△
|
△
|
|
*Ether
|
×-△
|
△-O
|
×
|
●
|
△-O
|
◎
|
△
|
|
*Acetic Acid
|
●
|
×-△
|
×-△
|
●
|
×
|
△
|
△
|
|
*Strong Inorganic Acid
|
△-O
|
×
|
△
|
o
|
o
|
△
|
●
|
|
*Low Inorganic Acid
|
·
|
0
|
◎
|
●
|
●
|
◎
|
●
|
|
*Strong Ageing
|
△-0
|
o
|
◎
|
●
|
●
|
●
|
●
|
|
*Young Age
|
·
|
o
|
◎
|
●
|
●
|
●
|
o
|
|
12.Heat Resistance(℃)
|
100
|
100
|
120
|
125
|
125
|
220
|
250
|
|
13.Anti-Aging
|
o
|
o
|
●
|
●
|
·
|
●
|
·
|
|
14.Embedment Resistance
|
×
|
×
|
△
|
×
|
o
|
△-O
|
o
|
|
15.Water Vapor Resistance
|
△
|
△
|
△-O
|
o-●
|
△
|
△-O
|
O-●
|
|
16.Weather Resistance
|
△
|
△
|
△
|
●
|
●
|
·
|
●
|
|
17.Ozone Resistant
|
×
|
×
|
△
|
·
|
●
|
●
|
|
|
18.Insulation
|
●
|
●
|
△
|
●
|
●
|
0-●
|
0
|
|
19.Gas Permeability
|
△
|
△
|
O-●
|
△
|
o
|
△
|
△
|
Excellent● Good○ Average△ Not recommended×
