Engine Valve Stem Oil Seal For Commins 6BT 6CT 6BTAA Engines
High Quality FKM Rubber Valve Stem Oil Seals For Commins 6bt 6ct 6btaa Engines
Size: OEM Size/Standartd Size
Introduction:
There are many kinds of FKM rubber valve stem oil seal rubber seal for Japanese market in our factory.The valve stem seals can reduce the oil leakage into the combustion chamber causes the components to be charcoal and reduces the service life of the engine parts.
Are valve seals rubber?
The largest distinction among the 3 styles of artificial rubber seals is their warmness resistance. A artificial rubber seal with inadequate warmness resistance will harden and crack prematurely. This can cause seal degradation, with portions of the seal breaking away and clogging the oiling gadget and oil pickup screen, inflicting engine harm from lack of lubrication.
Pictures of the Rubber Valve Stem Oil Seals:
Rubber Features:
| MATERIAL | TEMP | ADANTAGES | LIMITATION |
Nitrile Rubbrt (NBR) | -40~125ºC | Good oil and fuel resistance High tensile strength Low swelling in water | Poor weather and ozine resistance Poor resistance against polar lkuids Poor resistance against clhydrocarbon Poor resistance against aromatic fluids |
Fluorinated Rubber (FKM) | -20~250ºC | The resistance against oil and fuels is better than other types The only highly elastic rubber whice is resistance to aromatci and chlornated hydrocarbons Exccllcent hcat resistance Exccllcent weather and ozonc resistance Exccllcent acid resistance Low swelling in water | Limited cold flexibliity Limited tensile and tear strength Limited wear resistance High compression set in hot water Poor resistance to polaric solvents |
Polyacrylate Rubber (ACM) | -25~150ºC | Good oil and fuels resistance Good weater and ozone resistance | Not usable in contact with water and water solutions Limited cold flexibility Limited tensile strength and tear resistance Poor wear reisistance Poor resistance against polar and aromatic and chlorinared hydrocarhons |
Silicone Rubber (VQM) | -60~225ºC | Best heat resistance of all rubber types Excellent low temp resistance of all rubber types Excellent weather and ozone resistance | Poor tensile and tear strength Poor wear resistance Sensitive to hydrolysis Poor resistance against aromatic oils and oxidized mineral oils Poor diffusion resistance |
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