One of the key benefits of the 25x47x7 oil seal is its high level of resistance to wear and tear. This makes it an ideal choice for use in heavy-duty machinery and equipment that is subject to constant movement and pressure. The seal is able to withstand the rigors of daily use without degrading or failing, ensuring long-lasting performance and reliability.
Fit the new gasket to the cover or head — whichever the old gasket was fixed to.
Silicone compounds or “VMQ” offers a wide range of traditional operating temperatures starting at -60°C to 200°C (-140°F to 392°F).


Figure 14.3. Oil aging of fluoroelastomers.5 Chart shows percent retained elongation. Conditions: Aged at 150°C in Service Fluid 105 (oil changed every 168 h).
A: with minor lip
In addition to providing a reliable seal, the 40mm rubber gasket also helps to dampen vibrations and reduce noise, improving the overall performance and longevity of the equipment. Its durable construction ensures long-term reliability and minimizes the need for frequent maintenance or replacement.
2. Oil seal structure and functions

Oil or other seals can be used for grease and oil seals. A flexible lip, radial lip, or rotating shaft seal are different names for an oil seal. Single lip, double lip, triple lip, and four or more lips are frequent configurations. Double dust lip seal A seal with a garter spring design is the Double Dust Lip (DDL) seal. It has two dust lips, as the name would imply, plus a fluid lip with a garter spring to keep the lip firmly attached to the wear ring. Given the ongoing evolution of bearing seal designs, this seal would be considered a starting seal. For more than 50 years, this design has been the workhorse of the freight business; it still is in some regions. NBC Brenco Bearing Seal performs the fundamental task of keeping contaminants and grease out. Because of the garter spring, this seal would add the most torque and temperature to the bearing. Efficiency plus bearing seals Due to eliminating the fluid lip using poly inserts and rotors, the Efficiency Plus (EP) seal has a reduced torque value of fewer than 15 in-lbs. Although it features a triple dust lip rather than a double dust lip, the dust lip is still a molded component of the design. A labyrinth-like insert and rotor interlock each other to replace the fluid lip. NBC Brenco labyrinth provides excellent grease while lowering the torque required to rotate the seal. Other types of oil seal and grease seals include: