m20 transmission_80 series chassis

  • Leather is probably the oldest of the lip materials still in common use, but the move towards mass production methods has seen a massive increase in the development of synthetic rubbers which lend themselves to accurate and repeatable injection and compression moulding. Nitrile (NBR) is still by far the most common elastomer for “normal” use, whilst Viton® (FKM/FPM) is rapidly replacing Polyacrylate (ACM) and Silicone (VMQ) for high-temperature applications. Viton® also has high resistance to abrasion and chemical attack making it a preferred elastomer. Recent developments in the use of PTFE for Rotary shaft seals has caused widespread interest particularly for high-speed shaft rotation or poor lubrication applications.

  • Typically used in hydraulic high-stress applications where compounds under high pressure are exposed to wear, the benefits of polyurethane seals include: 

  • Carefully lower the sump from the crankcase.

  • Type B: An outer metal case generally used on shafts with diameters under 150mm and bore housing materials made of steel or cast iron. It provides a firm and accurate seal in the housing but may limit the static sealing on the outer diameter (O.D.).
  • In addition to its sealing capabilities, the oil seal 40x60x10 contributes significantly to energy efficiency. By preventing lubricant leaks, it minimizes the need for frequent refilling, reducing energy consumption associated with oil production and transportation. Moreover, it helps in maintaining a clean working environment, thereby increasing workplace safety and minimizing potential environmental hazards.