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Base Rubber Material Feature Table

CHARAC TERISTICS MATERIALS
Natural rubber
NR
Styrene butadiene
SBR
Nitrile butadiene
NBR
Ethylene propyle
terpolymer EPDM
Chloroprene
(neoprene) CR
Silicone
MQ. PMQ
Fluoro-Carbon
VITON
1. SPECIFIC GRAVITY 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,MLI+4 (100ºC) 90 - 150 30 - 60 30 - 100 50 - 150 45 - 120

3. HARDNESS, SHORE A 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 SET ○-● ○-● ○-● △-● ○-●
7. TEAR RESISTANCE △-○
8. ABRASION RESISTANCE
9. RESILIENCE △-● ○-●
10. BRITTLE POINT (ºC) -50 ~ -70 -30 ~ -60 -20 ~ -50 -40 ~ -60 -35 ~ -55 -50 ~ -120
11. FLUIDS RESISTANCE






*WATER × ○-●
*GASOLINE × × × ×-△
*NATURAL OIL △-○ △-○ ○-●
*SYNTHETIC LUBRICANTS × × ○-● × ×
*ALCOHOL ×
*TOLUENE × × × ×-△
*KETONE ×-○ × ×-△ ×-△ ×-△
*ETHER ×-△ △-○ × △-○
*ACETIC ACID ×-△ ×-△ ×
*CONC. INORGANIC ACIDS △-○ ×
9.DILUTE INORGANIC ACIDS
10.CONC. ALKALIES △-○
11.DILUTE ALKALIES
12. HEAT RESISTANCE (ºC) 100 100 120 125 125 220 250
13. AGING RESISTANCE
14. FLAME RESISTANCE × × × △-○
15. STEAM RESISTANCE △-○ ○-● △-○ ○-●
16. WEATHER RESISTANCE
17. OZONE RESISTANCE × ×
18. INSULATING PROPERTY ○-●
19. GAS PERMEABILITY ○-●
EXCELLENT● GOOD○ FAIR△ NOT RECOMMEND×

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