Overall, the 25x47x7 oil seal is a critical component in many machines and engines, offering durability, reliability, and versatility in sealing oil leaks. By choosing a high-quality oil seal and following proper installation and maintenance procedures, machine operators can benefit from optimal performance and efficiency in their equipment.
There is a British Standard laid down for the control of synthetic rubbers. BS 3574 (1989) helps to determine shelf life – for instance, Nitrile (NBR) and Polyacrylic (ACM) are Group ‘B’ rubbers and have a 7-year life, whilst Silicone (VMQ) and Fluoroelastomers (Viton®) are Group ‘C’ rubbers and have a 10-year shelf life. PTFE and Leather do not come into this category but like the others should be kept in the original packing for as long as possible away from direct light, dust, and humidity. Ozone, which can also be produced by battery-driven forklift trucks has a very bad effect on synthetic rubbers. Finally, protect the sealing lip – DO NOT hang the seals on nails, wire etc.



Read More About Valve Oil Seal supplier Xingtai Huimao Trading Co.,Ltd. is a leading oil seal manufacturing expert with a professional design and manufacturing team to provide high-quality oil seal products for all industrial and automotive applications. For more than 40 years, we have continuously improved our technology to meet the needs of various industries, and produced oil seals that meet customer needs. We work with customers to provide high-quality and fast service as well as customized requirements. Whether it is new product development or OEM oil seals, or looking for replacement parts or wear parts, our expert team can recommend suitable oil seals for your application.

Before installing the oil seal, it is essential that the oil seal, shaft and bore are not damaged. So, ensure that the surfaces the oil seal comes in contact with do not have any sharp points or burrs. The sealing lip is fragile, so any minor damage to it can cause leakage. Also, make sure the oil seal is clean. Even a small amount of dirt can cause a leak. Therefore, never use a pre-used oil seal for the assembly.


Indeed, when installing this oil seal, the oil sump must be installed using silicone seal. Removal of the old seal and oil sump is necessary, otherwise the oil seal cannot be fitted properly either. If these steps are not followed, leakage is inevitable.
Conventional oil seals are the traditional seals, which can be recognised by a spring on the inside. These oil seals are made of a metal housing that contains a rubber seal. This part is often made of elastomer and comes into contact with the surface of the rotating shaft.
As type C with dust lip
Proper installation and maintenance of the valve cover gasket are essential to ensure its effectiveness and longevity. Regular inspection and replacement of the gasket when necessary can help prevent oil leaks and maintain the integrity of the engine. Adhering to recommended service intervals and using high-quality replacement components are essential for optimizing the performance and longevity of the engine's valve cover gasket.
Wear and oil loss remains two of the most frequent signs of engine seal failure and, if not paid attention to, it can give rise to a breakdown in the vehicle’s system. Regular maintenance and routine oil changes minimize the issues associated with oil seals and potential oil loss.
Update: Size
Agricultural vehicles from New Holland and Cagiva, among others


