Material:
NBR FKM ACM SiliconBrand:
NNKPackage:
Plastic bag & carton box or according to your requProduct Description
If you need a quotation or valve seals for other car series, click here to contact us
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Valve Stem Oil Seal :
Valve Stem Oil Seal, often called the valve stem seal, is a tiny circular rubber seal that occupies a critical spot in the internal combustion engine. In this system, the valve stem seal is located between the valve stem and the cylinder head. It controls the flow of oil between the two components and prevents the leakage of oil.
The valve stem seal does more than just help keep oil inside the engine. Its design is such that it also helps to protect against wear on the valve stem. The valve stem seal keeps dust, road debris and engine oil from entering the space between the head and the cylinder head. The dust, road debris and engine oil can cause premature wear on the valve stem and ultimately lead to valve failure.
Valve stem seals are available in both oval and round shapes. The shape of the seal determines how well it fits the valve stem. The oval shape offers the most surface area for contact, which improves the sealing ability, but the round shapes minimize the amount of space between the head and the cylinder. The choice of shape should be based on the application.
The seal is generally made from a combination of synthetic rubber and a metal core. The rubber helps to ensure that the seal remains resistant to temperature changes, wear and tear. The metal core helps to keep the seal from stretching out of shape due to the forces of the engine.
Valve guide seal:
Valve guide seal, also known as a valve stem seal, is an essential component of a vehicle’s internal combustion engine, and is designed to provide superior sealing between the valve stem and valve guide. It is crucial to the proper functioning of the engine and is used to help reduce oil usage, improve valve performance, and keep the engine working efficiently.
In simple terms, a valve guide seal is a circular rubber ring that is placed around the outer circumference of the valve stem and fits inside the valve guide itself. This creates a tight seal between the two components, and prevents any oil or engine coolant from entering the combustion chamber. Valve guide seals also help to reduce friction between the two components, thus allowing for smoother and more efficient valve movement.
Without valve guide seals, the combustion chamber and cylinder walls of an engine would be subject to intense wear and tear as oil and coolant from the engine seeps out. This would result in inefficient combustion and increased emissions, leading to poor overall engine performance.
The size and shape of valve guide seals varies depending on the engine type and manufacturer. Generally, the seal is made of a rubber-like material and is held in place by a metal retaining band. The retaining band also helps to secure the valve guide in place and prevents any unwarranted movement of the valve.
About our company：
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.
Benefits：
The Daihatsu Valve Stem Seal is a critical part of the engine's operation, ensuring the engine runs smoothly and efficiently. This essential part can offer a number of benefits:
• Ensures a proper seal between the combustion chamber and the outside environment.
• Regulates the flow of the air-fuel mixture that enters the chamber, helping it to perform its job efficiently.
• Reduces the risk of contamination of the air-fuel mixture, which could otherwise cause the engine to operate poorly.
• Lengthens the lifespan of the engine parts.
• Helps to reduce fuel consumption as well as pollution.
Overall, the Daihatsu Valve Stem Seal is a crucial part of an engine’s functioning and offers a number of benefits. If maintained and replaced when necessary, it can help to reduce fuel consumption and emissions as well as maintain an engine’s performance.
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).
Apply to
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.
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When choosing a valve stem seal, it is important to consider the type of engine and the environment the engine operates in. Different types of engines and environments require different valve stem seals. For example, some diesel engines may require a metal-reinforced valve stem seal, due to the higher combustion pressures involved. Different engine types will also require different types of fuels, which can also affect the type of seal needed
Choosing and maintaining a good quality valve stem seal is essential to ensuring that the engine will perform at its best and will not quickly break down. Consider the type of engine, environment, seal construction, and valve stem size when selecting a valve stem seal, and regularly inspect it for cracks or tears. With proper selection and maintenance, a good quality valve stem seal can provide years of use and reliable engine performance.
NOK-CN factory is your best choose. Contact me.
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.
2、For products
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.
3、About production
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
FAQ
1.Why more and more customers choose us?
a. We are specialized in the manufacturing and exporting of high quality seals. Choose us is to choose the rest assured.
b.We mainly produces various types, specifications, models of the seals of high precision mechanical components. We have all the specifications of what you need to help you achieve one-stop shopping, save time, effort and worry.
c.We has long been a domestic and international numerous oil seal mould supply business of manufacturer, service for 15 years, we have professional talents and product research and development equipment, our research and development ability, is the domestic first-class oil seal manufacturer home.
d. We provide one-stop sealing solutions, and provide a full range of services, from product design, mold development, stamping skeleton, vulcanization molding, clip, screening and packaging,. The entire process would take a shorter, more stable quality.
2. What is your packing?
a. Paper roller: 10pcs in one roller, 200 rollers in one carton
b. PP bag: 50 or 100pcs in one bag,15 or 30 bags in one carton
c. Box: 1pc to a box
d. According to customer's request.
3.Date of Delivery
a. 1-2 days if goods in stock.
b. 10-15 days if goods out of stock with molding.
c. 25-30 days if goods out of stock without molding.
4.Payment Term:
a. 30% T/T in advance and 70% balance paid before shipment.
b. West union/ Money Gram
c. Paypal
d. others for discussion
5. Can you produce according to the samples?
a. We accept ODM and OEM at the same time.We have the ability to provide the sample of the products of decomposition, develop the mould, for production.
6. How do you make our business long-term and good relationship?
a. We will continue to improve the process control, and improve the quality of our products and work to reduce operating costs and provide a competitive price for customers, to ensure that customers benefit
b. We seriously treat every customer, in good faith with them to do business, make friends, no matter how much volume, we will provide
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