Rear Axle Rubber Seal Nbr Fkm

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Rear axle rubber seal nbr fkm

The rear axle rubber seal is a seal used for the rear axle of automobiles or other mechanical equipment, usually made of rubber material. The function of the rear axle rubber seal is to prevent lubricating oil or transmission fluid from leaking from the rear axle and to prevent dust, moisture, and other impurities from entering the bearings or other key components.

• Rear axle skeleton oil seal: This is a common type of rear axle rubber seal, which consists of a rubber lip ring and a metal skeleton. The rubber lip is in close contact with the shaft, forming a sealing barrier, while the metal skeleton provides structural support. It effectively prevents lubricant leakage and resists wear and high-speed rotation.
• Rear axle seal: The rear axle seal is an annular seal usually made of rubber material. It is installed at the end of the rear axle to prevent lubricating oil from leaking between the axle and the external environment, and to prevent dust, moisture, and other impurities from entering the bearing. Rear axle seals usually have good oil resistance and wear resistance.
• Rear axle cap seal: Some vehicles may be equipped with a rear axle cap seal on the rear axle, which is a rubber seal that seals the gap between the bearing and the rear axle cap. It effectively prevents lubricant leakage and protects bearings from contamination by external impurities.

Rear axle rubber seals usually need to have characteristics such as oil resistance, wear resistance, high-temperature resistance, chemical corrosion resistance, and good elasticity to adapt to the working conditions in the rear axle environment.

Rubber sealing material

Material selection
The material selection of rear axle rubber seals usually depends on the specific application requirements and working environment. The following are some common rear axle rubber seal materials:

• NBR (Nitrile Butadiene Rubber): NBR is a commonly used rubber material with good oil resistance, wear resistance, and elasticity. It performs well under normal operating conditions and is suitable for rear axle rubber sealing in most drivetrains. However, NBR has relatively low high-temperature resistance and is not suitable for high-temperature environments.
• FKM (fluoroelastomer): FKM is a high-performance rubber material with excellent oil, heat, and chemical resistance. It excels in rear axle sealing applications where high temperature and corrosion resistance are required. FKM seals are typically used on rear axles operating in environments with high lubricant or transmission fluid temperatures.
• ACM (polypropylene rubber): ACM is a rubber material with good oil resistance and heat resistance, suitable for rear axle rubber seals under some medium temperature conditions. It can maintain good elasticity and sealing performance at high temperatures.
• VMQ (silicone rubber): VMQ is a high-temperature-resistant rubber material with excellent heat resistance and oxidation resistance. It is suitable for rear axle sealing requirements under high-temperature conditions and can maintain its performance and sealing effect in high-temperature environments.

High-temperature resistant FKM (fluoroelastomer) rear axle rubber seal is a rear axle sealing solution suitable for high-temperature environments. FKM has excellent oil, heat, and chemical resistance, making it ideal for many high-temperature applications.

• High-temperature resistance: FKM seals can maintain good performance and sealing effect in high-temperature environments. Generally speaking, FKM materials have a temperature resistance range of 150°C to over 200°C, which makes them suitable for rear axle seals in high-temperature transmission systems.
• Oil resistance: FKM seals have excellent oil resistance and can withstand contact with various lubricating oils and transmission fluids, and will not expand, soften, or fail due to the chemical composition of the oil.
• Chemical corrosion resistance: FKM seals have good corrosion resistance to many chemical substances, can withstand the effects of acids, alkalis, solvents, and other chemical substances, and will not be damaged or failed due to corrosion by chemical substances.
• Wear resistance: FKM seals have good wear resistance and can withstand friction and wear, maintaining their integrity and sealing effect.
• Elasticity: FKM seals have good elasticity and can adapt to the rotation and movement of the rear axle to achieve effective sealing.
• Aging resistance: FKM seals are durable and can work stably in high-temperature environments for a long time without obvious hardening, aging, or failure.

Shape

• O-ring: The O-ring is the most common and simple rear axle rubber seal shape. It has a circular cross-section and is usually made of rubber material. O-rings can form sealing contact with the shaft surface or seat groove through compression to prevent liquid or gas leakage.
• X-shaped sealing ring: X-shaped sealing ring, also known as four-lip sealing ring or four-lip ring, has an X-shaped cross-section. It consists of two symmetrical sealing lips and two side support rings, which can provide better sealing performance and resistance to compression deformation.
• V-shaped sealing ring: V-shaped sealing ring has a V-shaped cross-section and is made of rubber material. It is usually used for sealing between the shaft and the seat groove and has good sealing performance and resistance to compression deformation.
• U-shaped sealing ring: U-shaped sealing ring has a U-shaped cross-section and is made of rubber material. It is often used to seal the sliding or rotational movement of liquids or gases on shafts.
• Rectangular sealing ring: A rectangular sealing ring has a rectangular cross-section and is made of rubber material. It is often used to seal shafts or housings with rectangular cross-sections.

About Certification

• ISO/TS 16949: ISO/TS 16949 is a quality management system certification suitable for the automotive industry. This certification requires all links in the automotive supply chain to meet strict quality management requirements, including auto parts manufacturers. Passing ISO/TS 16949 certification can prove that automobile rear axle rubber seal manufacturers can comply with the quality management standards of the automotive industry.
• IATF 16949: IATF 16949 is the international automotive industry quality management system certification standard that replaces ISO/TS 16949. Developed by the International Automotive Task Force (IATF), it requires auto parts manufacturers in the supply chain to meet more stringent quality management requirements. Obtaining IATF 16949 certification is further proof that a manufacturer of automotive rear axle rubber seals has a quality management system that meets the highest standards.
• ISO 9001: Although ISO 9001 was not specifically designed for the automotive industry, it is also widely used in automotive parts manufacturing. Through ISO 9001 certification, automotive rear axle rubber seal manufacturers can prove that their quality management system meets international standards and provides products that meet quality requirements.
• ASTM D2000: ASTM D2000 is a standard developed by the American Society for Testing and Materials (ASTM) that specifies the material properties and classification of rubber products. Although it is not a specific certification for the automotive industry, compliance with ASTM D2000 standards ensures that the material properties of automotive rear axle rubber seals meet requirements.

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