Valve Stem Seal

Due to emissions laws, coupled with the fact that today's engines run hotter and valves open and close up to 100,000 times an hour, your stem seals have to be of good quality. NNK valve stem seals are made of the highest quality materials and the latest technology, ensuring tightness while extending service life and reducing replacement frequency.

The function of the valve stem seal

Valve stem seals are installed in the valve guides and slide to control valve stem lubrication. Too little oil can cause stem and guide wear. Too much oil can increase oil consumption and cause carbon deposits, which can lead to valve seat damage and premature valve wear. At the same time, if the valve stem seal is damaged, it will also increase the fuel consumption.

NNK valve stem seal design:

Positive seals : Attach to the valve guide boss. They work like a squeegee, wiping and metering oil on the stem as it passes through the seal.

Deflector seals: Deflect oil away from the valve stem. Also called umbrella seals, they move with the valve stem to shield the valve guide from excess oil.

Stem Seal Materials: Nylon, Teflon, Steel, and Synthetic Rubber (NBR, Polyacrylate, and Viton).

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DAIHATSU，ISUZU，MAZDA，MITSUBISHI，NISSAN，TOYOTA ，SUZUKI，KOMATSU，DAEWOO，HYUNDAL，BMW

NNK and valve stem seals：

In order to prevent premature hardening and rupture due to insufficient heat resistance of rubber seals, NNK guarantees the service life and ensures that the engine is in a lubricated state. The materials we choose are based on the use environment of the seals and the characteristics of the materials themselves. The oil seals produced have high-quality properties such as high temperature resistance, wear resistance, and long service life. Currently, Viton has excellent heat resistance (up to 450° F) and abrasion resistance and is the material of choice for most valve stem seals. If you have any valve stem seal needs, please contact us.

Valve oil seal model：

Description

Valve Stem Seals are used in car engine, which is preventing engine oil enter to exhaust pipe, preventing gasoline mixed with air, and preventing engine oil enter to combustion chamber.

The valve stem seal is one of the valve seals of the engine. NNK valve stem seal adopts a low-friction design, can withstand the high pressure of the engine exhaust and intake to improve the emission quality and improve the efficiency of the engine. The spring can ensure a long time on the quality of the seal. Our new rubber material can withstand even the most corrosive oils on the market. It is the most common part in the aftermarket and the valve stem seal is generally made by co-vulcanization of the outer frame and fluorine rubber. The aperture is equipped with a self-tightening spring or steel wire, which is used to seal the engine valve guide rod, which is one of many oil seals for cars and motorcycles.

Because the working environment of the valve oil seal is at high temperature and high pressure, it is necessary to use materials with excellent heat resistance and oil resistance. The commonly used materials for oil seals are NBR, FKM, Silicone, ACM, polyurethane, polytetrafluoroethylene.

Product Material

For the use of Valve Stem Seal materials, we provide: NBR, FKM, ACM, SBR, EPDM, including materials with special specifications. And according to customer needs, provide the most suitable material, we provide the most suitable material to them.

The Function Of Valve Stem Seal

Valve Stem Seal can prevent leakage and pressure in the engine and maintain normal pressure. It also can prevent engine oil from entering the combustion chamber and avoid engine oil loss. The valve stem seal is one of the important parts of the entire engine. It is usually in contact with gasoline and engine oil at high temperatures, therefore, heat-resistant, and oil-resistant rubber materials are required, so Fluorine rubber is a common choice.

NNK Valve Stem Seal Service Introduction

Located in China since 1983, NNK SEALING PARTS CO., LTD. is a Valve Stem Seal supplier and manufacturer with more than 10 years of experence in the Seal Industry.

With more than 40 years experience, NNK is specialized in leading seal and oil seal manufacture. From oil seals, O-rings, to gaskets, and customized products, application industries include manufacturing, chemical processing, defense, water treatment and filtration, hydraulics, fluid power, heavy trucks, automobiles, aerospace, oil and gas, medical and For life sciences, food and beverages, a complete product line is available for customer needs and specifications.

NNK has been offering customers high-quality Valve Stem Seal production service, both with dvanced technology and 10 years of experience, NNK ensures each customer's demands are met.

NNK welcomes you to view our high quality products Oil Seal, Rubber Ring, Gasket, Rubber Product and feel free to Contact Us.

Our Advantages

1. The Standard Product Inventory is Wide and Complete: NNK stocks the standard products and supplies the most common inch sizes. It can manufacture precise Valve Stem Seal according to various industrial needs and deliver them quickly and on time, made of high-quality rubber, with good performance.

2. Low Mold Cost: Most of the various Valve Stem Seal standard specifications already have molds, and no additional investment is required. If there is a special size that needs to be opened, we will also give back to the customer at low cost, or jointly develop the model for cooperation.

3. Flexible MOQ and Instant Delivery: It can support small orders from customers, MOQ is smaller than the industry, and sample testing is provided. Instant delivery allows customers to apply production scheduling more flexibly.

4. Auto Assembly Machine for Oil Seal Spring was introduced, the oil seal is more precise and faster production when inserting the spring, so that the delivery time and quality are more stable.

5. Fully Automatic Inspection: In 2020, the automatic inspection was introduced to ensure the quality of oil seal, overcome the bottleneck of manual inspection, and produce more efficient and fast output.

6. Provide Customized Services: In case there is a need for customized Valve Stem Seal, you are welcome to leave relevant information such as CAD / CAM, NNK can do advanced planning services and consulting for you.

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