Street Address: No. 269, Sishan Rd., Cixi
City: Ningbo
Province: Zhejiang
Country/Region: China
Material:Rubber
Auto
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 propertiesare important:
In order to satisfy various sealing conditions, EPM has many compoundsavailable for your choice.
TABLE 1
BASE POLYMER
NITRILE
POLYACRYLATE
SILICONE
FLUOROELASTOMER
Material Code
N
P
S
V
Temperature Range *
-40 F ~ 250 F(-35 C ~ 120 C)
-20 F ~ 300 F(-30 C ~ 150 C)
-80 F ~ 400 F(-60 C ~ 200 C)
-30 F ~ 400 F(-35 C ~ 200 C)
Oil Resistance
E
G
Acid Resistance
F
Alkali Resisitance
X
Water Resisitance
Heat Resistance
Cold Resistance
Wear Resistance
Ozone Resistance
ASTM D2000 Spec.
2BG715B14B34E014EO34EF11EF21
SDH710A26B16B36EO16EO36
2GE8O7A19B37EO16EO36G11
2HK710A110B38
* maximum temperature limits depend on other operating conditions.
TABLE 2
Advantage
Disadvantage
Good temperature resistance.Commonly chosen as high temperature replacement for Nitrile or Polyacrylate.
Fair resistance to water, dry running.Low temperature resistance is fair.
Polymerised acrylic acidesters or PA and ACM.Good resistance to mineral oil, hypoid gear oil E.P. additive, greases, aging and flex cracking.
Poor cold temperature limit, dry running ability, water resistance.Lower mechanical strength.
Commonly referred to as Buna-N or NBR and is copolymer of Butadiene and Acryonitrile.Good resistance to petroleum oils, water, silicone oil, greases, glycol base fluids.Good abrasion resistance, cold flow, tear resistance.
Poor resistance to ozone and weather aging.
Broad temperature range.Good ozone resistanceResistant to compression set.
Low resistance to hydrocarbon fluids like gasoline or paraffin fluids or steam above to 50 psi.