Valve Stem oil seal for Pakins
Valve stem seal (Valve stem seal) is a kind of oil seal, used to seal the engine Valve guide rod.which is generally vulcanized by outer metal and viton rubber . The oil seal diameter part is equipped with self-tightening spring or steel wire, The valve oil seal can prevent the oil from entering the exhaust pipe, avoid the oil loss, prevent the mixture of gasoline and air and the exhaust gas from leaking, prevent the engine oil from entering the combustion chamber. The valve oil seal is one of the important parts of the engine valve group, which is in contact with gasoline and engine oil at high temperature.Temperature: -40-250 Degree
How to produce them ?
1. Rubber making : From Raw material formular ,mixing rubber ,and Preform.
2. Metal pressing and surface treatment
3. Mould pressing under standard pressure and hot teemperature by production guide card
4- Cutting lip by automatic machine
5- Inspection and Packing ,Usually is 8 pcs or 16 pcs each bag ,or 500 pcs each bag
We supply valve seals for automotive ,truck ,diesel engine ,motorcycle and so on
Automotive valve seal divided into intake valve and exhaust valve two kind.There is no specific replacement cycle, there is aging, hardening or damage after the replacement can be. The symptoms of a broken valve oil seal are an oil leak; an oil leak from the valve oil seal causes an accelerated oil loss; blue smoke from the back of the exhaust pipe; and an oil leak into the cylinder, then forms “Burns the engine oil”the phenomenon.
The method of judging the damage of the valve oil seal is as follows:
1. Disassemble the intake manifold to find the black gel substance above the valve, and then confirm the valve oil leak, and the mixture of oil and impurity will form the black gel substance in the long-term high temperature state.
2. judge the valve oil leak by the way of the throttle and the throttle. When the gas pedal, exhaust pipe blue smoke, that is the piston, piston ring and cylinder liner wear clearance is too large. When the throttle, exhaust pipe blue smoke, then the valve oil seal damage, valve guide wear,
3, usually the valve oil seal problems caused by the impact of the engine burning oil and exhaust smoke blue. Without treatment for a long time, it is easy to let the valve and spark plug carbon accumulation serious, full combustion, which leads to the car engine power decline.
Customized requirement is allowed,Please contact us if you have any request or inquiry .