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  • No single physical property of rubbers is responsible for the successful performance of an oil seal or ‘O’ ring. The ultimate tensile strength, breaking elongation, modulus, shore hardness, creep and stress relaxation in tension and compression loads are all important physical properties that characterize a seal or ‘O’ ring. Compression strength and set together with stress relaxation or decay are important for effective sealing. The difference in these properties in a swollen seal is highly critical. An optimum swelling value in a fluid medium is a desirable feature. De-swelling decreases the seal pressure against the wall of the housing where the seal is fixed, leading to leakage. Over swelling minimizes the physical properties of the rubber. Seals made of polysulfide rubbers have extreme fuel resistance but undesirably high compression set. The effect of temperature on the seal is an important factor. Swelling under stress can increase at higher temperatures and a suitable compounding technique should be adopted to reduce this effect.

  • In addition to their durability and reliability, metal cased oil seals are relatively easy to install and maintain. They are designed to fit securely into the housing or assembly of the equipment, ensuring a hassle-free installation process. Once in place, these seals require minimal maintenance and can be easily replaced when necessary, reducing downtime and maintenance costs.
  • Trailer Hub Oil Seal: Trailer hub oil seals are designed to maintain the integrity of the wheel hub assembly on trailers and towed vehicles, preventing the leakage of lubricating oil and the ingress of contaminants. These seals are essential for ensuring the proper functioning and longevity of the wheel bearings and other internal components in trailer applications.
  • For instance, in automotive engines, these seals prevent engine oil from escaping, ensuring efficient lubrication and reducing wear on critical parts
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  • **Introduction