valve stem oil seal is a kind of oil seal, which is generally made of fluorine rubber. The oil seal is equipped with a self-tightening spring. The valve oil seal is used for the seal of the engine valve guide rod.
The valve stem oil seal can prevent oil from entering the intake and exhaust pipes, avoid oil loss, prevent the mixture of gasoline and air, and prevent 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 oil at high temperature. The valve stem oil seal is a device that specifies the amount of metered oil, lubricates the valve guide, and reduces the task of the engine.
The Valve Stem Seal produced by NNK is tested and benchmarked. The materials we use not only consider rubber hardness, temperature, and resistance to oils, but also improve tear resistance and aging resistance. High-quality seals will not harden and crack prematurely, will not affect the normal operation of the engine, and will not increase the fuel consumption of the car.
Commonly used materials include nylon, PTFE, rubber, steel and synthetic rubber or combinations of these. FKM is a fluoroelastomer used in many Fel-Pro stem seals for newer vehicles that run hotter. It is usually combined with a metal jacket or covering that completely surrounds the positive seal of the FKM. FKM has excellent heat resistance (up to 450°F) and abrasion resistance.
Installation and use of valve stem oil seal
Fit the plastic over the valve stem and apply a coat of oil to the oil seal lip. Protect the new valve stem oil seal. Pack the oil onto the tool and push slowly onto the valve guide.
Before installing the intake and exhaust valves, a layer of oil must be applied to the valve stem.
The valve oil seal replacement process has strict requirements, and the valve chamber and cylinder head need to be removed. The work is very complicated. When installing the timing belt, the camshaft must be placed
Set it at the 0 scale line. The crankshaft is aligned with the top dead center.
DAIHATSU, ISUZU, MAZDA, MITSUBISHI, NISSAN, TOYOTA, SUZUKI, KOMATSU, DAEWOO, HYUNDAL, BMW
Approaching NOK-CN factory
NNK is a brand of NOK-CN factory. Standard seals are developed or used according to specific customer requirements. All products use professional technology to ensure maximum sealing performance while reducing friction. NNK stem oil seal has excellent chemical resistance and temperature resistance . Consistent oil metering and long service life for optimal valve lubrication and minimal engine emissions.
The NNK brand always aims to produce excellent products and provide high-quality services, insist on using the best raw materials, and follow the strictest quality measures from production control to packaging, in order to continuously produce excellent tensile strength, compression deformation rate, temperature resistance and Pressure resistant seals. At present, NNK's products are widely used in automobiles, high-speed rail, agricultural machinery, construction machinery, trucks and other industries, and have won a good market reputation.
Why use oil seals?
1、Origin of oil seal
Oil seals, also known as shaft seals, because hydraulic cylinders, gearboxes and other related components have always had the problem of oil and grease and other media leaking along the rotating shaft.The oil seal came into being.
2、The role of the oil seal
Oil seals are used to close the space between stationary and moving parts in machinery and also help prevent lubricants from escaping the system. Prevent pollutants from entering in harsh working environment of high temperature and high pressure.
3、Oil seal structure
The oil seal is generally composed of three basic components: sealing element, metal shell and clamping spring.Types of oil seals include single and double lips, rubber or polymer, metal housing, spring loaded, and internal, external and axial guides.
Why use NOK-CN factory-made oil seals?
1、For the factory
We are an honest oil seal supplier.We have very good expertise, experienced technicians, new good equipment, strict inspection procedures, durability and performance seal testing, PPAP level IIl submission. Strict process control, international standard high-quality products and affordable prices. The strength factory has more than 150 workers, strong delivery capacity, we provide you with the best after-sales service.
NNK is committed to the best raw materials, and uses advanced technology and equipment to solve oil seal problems for customers. Our products not only ensure the sealing effect, but also minimize the friction force. The service life is longer than the average service life of oil seals. less loss.
A: Existing molds: 30 days, depending on ordering quantity.
New Molds: 60 days, depending on ordering quantity.
Samples Submission :21-28 days with existing toolings.
We are NNK brand under NOK-CN, accept ODM and OEM. We have the ability to provide samples of disassembled products, develop molds, and carry out production