(11 products available)
NOK up oil seals are divided into three types based on their shape and material composition. The first one is the circular NOK oil seal, which is also called the rotary shaft seal. This is because it has a circular shape and is used to seal areas where rotating shafts pass through a stationary housing. The design includes a flexible lip that presses against the shaft, creating a seal that prevents leakage of fluids, such as oil or grease, and keeps contaminants like dust and dirt out of the mechanism. The circular NOK oil seal is widely used in various applications, including automotive, industrial machinery, and aerospace, where reliable sealing is crucial for optimal performance and longevity of moving parts. The circular NOK oil seal comes in different sizes and materials to suit various specific applications and requirements.
The second type is the rectangular NOK oil seal, also known as the axial oil seal. This seal is designed to seal shafts that move in and out of the housing (axially) rather than rotating. It has a rectangular shape with a body that fits into a groove in the housing and a sealing lip that presses against the moving shaft. Like the circular oil seal, the rectangular NOK oil seal also prevents fluid leakage and keeps contaminants out. However, it is mostly used in applications with reciprocal shaft movements, such as hydraulic cylinders, pumps, and some engine components. The rectangular NOK oil seal is designed to suit specific applications regarding size, groove dimensions, and sealing material characteristics.
The last type of NOK oil seal is the special-shaped oil seal. This oil seal is designed in a non-standard shape, such as a square, triangular, or custom geometry, to meet specific sealing challenges in various industries and applications. For instance, in aerospace and high-precision machinery, special-shaped oil seals are used to maintain cleanliness and prevent contamination in critical moving parts. In medical devices and seals, special-shaped oil seals are used to ensure fluid tightness and prevent leakage in life-saving equipment.
NOK oil seal
The NOK oil seal is a seal utilized to keep oil from leaking out of a machine or vehicle. It is produced using a tough elastic material that can endure a great deal of grinding, with a metal casing to help its shape. The NOK oil seal has an extraordinary plan with an internal lip and an outer casing that makes it great at forestalling spills. It is utilized in numerous different machines and vehicles to keep oil where it should be and forestall spills and soil section. The NOK oil seal is a significant part that assists with keeping numerous machines and vehicles running without a hitch and clean.
Material
NOK oil seals are made of a variety of materials, including rubber, silicone, and fluororubber. Each material has its advantages and disadvantages, making it more suitable for certain applications than others. For example, rubber seals are the most common and cost-effective option. They are heat and oil-resistant, making them a popular choice for various applications. On the other hand, silicone oil seals are more expensive but highly durable and heat-resistant. They also have a longer lifespan and are more suitable for high-temperature applications. Conversely, fluororubber oil seals are more costly than both rubber and silicone seals. However, they are highly resistant to chemicals, heat, and oil, making them an ideal choice for demanding applications.
Size
NOK oil seals come in a variety of sizes, just like any other seal. The size of the seal needed for a specific application depends on the diameter of the shaft and the wall bore. A seal that is too small will not fit properly, resulting in leaks, while one that is too large will not create an adequate barrier, defeating its purpose. To ensure a perfect fit, it is critical to measure the shaft and bore accurately and select an oil seal that matches those dimensions.
Application
There are numerous NOK oil seal applications, but they are primarily used in automotive and industrial machinery. In vehicles, they can be found in the engine, transmission, and differential assemblies. Oil seals prevent oil leaks, ensuring proper lubrication of moving parts and preventing contamination. This helps maintain optimal performance and extends the lifespan of the components. NOK oil seals are also used in various industrial machinery, such as pumps, motors, and gearboxes. They serve the same purpose of preventing leaks and contamination, which is critical for maintaining the efficiency and reliability of the machinery.
Annual inspection
Inspect the NOK oil seals every year to ensure they are still in good condition. Look for any signs of wear and tear, such as cracks, holes, or damage. If there are any problems, change the seals right away.
Correct installation
When putting NOK oil seals on, make sure to follow the instructions carefully. Use the right tools and methods to avoid damaging the seals.
Proper lubrication
Use the right type and amount of lubricant when needed. This helps the seals last longer and work better.
Avoid extreme conditions
Avoid putting the seals in places that are too hot, too cold, or where there are a lot of chemicals. This can damage the seals and cause them to wear out quickly.
Protect during operation
To ensure NOK oil seals last longer, it is essential to avoid exposing them to extreme temperatures, aggressive chemicals, or physical damage. Seal protectors can be used to prevent damage during transport and storage.
Choosing the right NOK oil seal can be challenging for retailers and end users. Here are the factors to consider:
Seal Size
The correct size of the seal must be chosen to fit the housing bore and the shaft diameter. A seal that is too loose will not seal effectively, while one that is too tight can damage the lips upon installation.
Seal Type
Different seal designs are available for various applications and environments. For example, seals with metal cases are good where there is high pressure, while those with rubber or composite materials work well in less demanding conditions.
Application
The intended use of the oil seal should be considered. Specific designs are better suited for automotive engines, gearboxes, axles, pumps, and other applications. The right seal for the application ensures longevity and reliable performance.
Material
NOK oil seals are made from different materials to resist wear, tearing, and damage from the sealed fluid or substance. Common materials include various grades of rubber, lip reinforcement with metal, and composite materials.
Operating Conditions
The temperature range and the type of fluid being sealed must be considered when choosing the material. For instance, high-temperature seals are made to withstand heat, while seals for hydraulic fluids are designed to be compatible with the fluid.
Speed
Seals for high-speed rotating shafts are designed differently than those for low-speed operations. High-speed seals have special features to prevent leakage and withstand the heat generated by high speeds.
Quality Standards
Buyers should look for NOK oil seals that conform to relevant industry quality standards. Such seals have been tested to meet specified performance criteria and reliability under defined conditions.
Replacing NOK UP oil seals is a simple task that can be done by following the steps below:
Preparation
Gather all the necessary tools for the task. This includes oil seal replacement tool, seal driver, screwdriver, torque wrench, oil, and new NOK oil seal. Also, ensure the work area is clean and safe. The vehicle should also be parked in a safe area. Finally, disconnect the relevant components of the vehicle to access the oil seal and drain the oil from the system where the seal is located.
Remove the Old Seal
Use a seal removal tool or screwdriver to take out the old seal. Be careful not to damage the surrounding components when removing the oil seal.
Clean the Seal Bore
Clean the seat for the new seal and the surrounding area. Ensure there is no dirt or debris that can cause damage once the new seal has been installed.
Install the New Seal
Lubricate the lip of the new seal with a small amount of oil. This helps to protect the seal and ensure it lasts longer. Carefully position the new seal and use a seal driver or a suitable tool to evenly press it into place. Ensure the seal is seated properly and aligned.
Reassemble Components
Once the new oil seal has been installed, reassemble all the components that were removed to access the seal. This includes any covers, flanges, bolts, and the like. Ensure all the components are cleaned before reassembling them.
Reconnect the Oil System
Once the oil seal has been replaced and all components reassembled, reconnect the oil system. Ensure there are no leaks and the seal is functioning properly.
Dispose of the Old Seal
The old NOK oil seal should be disposed of in accordance with local regulations. This ensures a safe environment, free from toxic materials.
Q1: Are NOK oil seals better than other types of oil seals?
A1: NOK oil seals are not necessarily better than other types of oil seals. The suitability of an oil seal depends on the specific application requirements, such as the type of fluid being sealed, temperature conditions, speed, and other factors. NOK oil seals are considered high-quality seals, but there are many other reputable manufacturers that produce seals that may be suitable for your needs.
Q2: What are NOK oil seals made of?
A2: NOK oil seals are typically made from elastomeric materials like nitrile rubber (NBR), fluorocarbon rubber (FPM/FFKM), or silicone rubber (VMQ). These materials are chosen for their excellent sealing properties, resistance to oils and fuels, and durability in various operating conditions.
Q3: Can NOK oil seals be used for high-temperature applications?
A3: Yes, NOK oil seals can be used for high-temperature applications, but it is essential to select the appropriate material and seal design specifically formulated for such conditions. Fluorocarbon rubber (FPM/FFKM) seals are often preferred for high-temperature and high-pressure environments due to their excellent chemical resistance and thermal stability.
Q4: How to install NOK oil seals?
A4: Proper installation is crucial to ensure the effectiveness and longevity of NOK oil seals. First, prepare the housing and shaft to avoid damage to the seal during installation. Apply a thin layer of lubricant to the seal's lips before installation. Align the seal carefully to prevent cocking and uneven wear. Use a seal driver or a soft tool to insert the seal into the housing, applying even pressure. Finally, check the seal's position to ensure it is seated correctly.
Q5: Where can nok oil seals be purchased?
A5: Nok oil seals can be purchased from authorized NOK distributors, industrial supply companies, and specialized seal and bearing suppliers. Additionally, they are available on Chovm.com, where buyers can find various suppliers offering NOK oil seals in different specifications.
浙公网安备 33010002000092号
浙B2-20120091-4