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  • Victor Reinz

  • Modern engine oils, such as the current SG classification for gasoline engines, contain a large fraction of additives, many of which are detrimental to fluoroelastomers. The primary functions of oil-additive packages are to protect metal parts, avoid deposits in the engine, minimize oil degradation, and adjust fluid viscosity. Little attention has been paid to avoiding damage to rubber seals. Instead, elastomer producers have been expected to provide new, higher-performing products at no increased cost to auto manufacturers. Among the additives with moieties that may attack fluoroelastomers at high temperature are detergents (phenolates), dispersants (succinimides, alkylphenol amines), and antioxidants (amines, sulfides, hindered phenols).4 Many of these components are multifunctional, containing phenol or amine groups that can dehydrofluorinate and crosslink VDF-containing fluoroelastomers, leading to loss of elongation and eventual embrittlement. However, the rate and extent of reactions with seals are affected by many factors, including whether air is present in the system. When oil is exposed to air at high temperature, additives may undergo considerable changes. For example, a significant fraction of amines may be oxidized to amides, which have little effect on fluoroelastomers.5

  • Furthermore, while it might be tempting to opt for cheaper alternatives, it's essential to weigh the long-term benefits. High-quality seals, though initially more expensive, tend to last longer and provide better sealing performance, reducing the likelihood of recurrent issues and potential repair costs down the line.
  • In conclusion, oil seals are essential components in machinery and equipment that play a critical role in preventing oil leaks and ensuring smooth operation. The 65x90x10 oil seal, with its specific size and design, offers reliable sealing performance for a wide range of applications. By selecting the right size, material, and design, and following proper installation and maintenance procedures, operators can effectively protect their equipment and prolong its service life.


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  • Rotary Wheel Of Auto Parts

  • Oil seals come in various shapes to fit the machine or substance for sealing.
    For this reason, when designing a machine, it is important to select the oil seal that is right for that machine.
    Next time, we will explain the key points to consider when selecting your oil seal.

  • The 2.0% TDi valve cover gasket is made from high-quality materials that are resistant to heat, oil, and other harsh conditions commonly encountered within the engine bay. These materials include synthetic rubber compounds that have been specifically formulated to withstand the extreme temperatures and pressures generated by the engine's operation.
  • Oil seals, also known as shaft seals, are essential components used to prevent the leakage of fluids in machinery and equipment. These seals are widely used in various industries such as automotive, aerospace, and manufacturing.
  • Sealing lip

  • In conclusion, pulley oil seals, though seemingly small, play a significant role in the smooth functioning and longevity of mechanical systems. Their importance lies not just in their ability to retain lubricants and exclude contaminants but also in their contribution to overall machinery health and operational efficiency. Therefore, understanding and appreciating the value of these seals is paramount for anyone involved in the maintenance and operation of machinery that relies on pulley systems.