OEM No/Model: CIE8-919-833
Valve oil seal
Applications: Automobile
Material:NBR,Viton.
OEM/Customized specificationS
Right Price with Right Delivery;
Valve stem Oil seal
and Rubber Oil seal series
The most important component of an oil seal is the clastomer material.
To consider the environmental conditions, the following properties
are important:
In order to satisfy various sealing conditions, EPM has many compounds
available for your choice.
TABLE 1
BASE POLYMER | NITRILE | POLYACRYLATE | SILICONE | FLUOROELASTOMER |
Material Code | N | P | S | V |
Temperature Range * | -40 F ~ 250 F | -20 F ~ 300 F | -80 F ~ 400 F | -30 F ~ 400 F |
Oil Resistance | E | E | G | E |
Acid Resistance | G | F | F | E |
Alkali Resisitance | G | X | X | F |
Water Resisitance | G | F | G | G |
Heat Resistance | G | E | E | E |
Cold Resistance | G | F | E | F |
Wear Resistance | E | E | G | E |
Ozone Resistance | G | E | E | E |
ASTM D2000 Spec. | 2BG715B14B34E014 | SDH710A26B16 | 2GE8O7A19B37 | 2HK710A110B38 |
* maximum temperature limits depend on other operating conditions.
TABLE 2
Advantage | Disadvantage | |
FLUOROELASTOMER | Good temperature resistance. | Fair resistance to water, dry running. |
POLYACRYLATE | Polymerised acrylic acidesters or PA and ACM. | Poor cold temperature limit, dry running ability, water resistance. |
NITRILE | Commonly referred to as Buna-N or NBR and is copolymer of Butadiene and Acryonitrile. | Poor resistance to ozone and weather aging. |
SILICONE | Broad temperature range. | Low resistance to hydrocarbon fluids like gasoline or paraffin fluids or steam above to 50 psi. |
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