Nominal seal width
b, mmAir side face The oil seal surface vertical to the center line of the shaft on the side that does not come in contact with substances to be sealed is called the back face.
What are rotary shaft seals?
Oil seals made of HNBR are characterised by excellent properties that include high resistance to mineral oils with additives, low steam and gas permeability, good cold flexibility down to -30 °C depending on type, good ozone resistance and friction resistance. HNBR seals withstand heat up to 150°C.
- Moreover, regular maintenance and timely replacement of oil seals are integral to machinery health. Signs of wear, such as leaks or discoloration, should prompt immediate action. Neglecting these signs could lead to severe damage, necessitating more extensive repairs or even replacement of the entire unit.
Installation of the oil seal
- A valve cover gasket, particularly the one designed for the 4.6 engine, serves as a seal between the valve cover and the cylinder head. The 4.6 refers to the engine displacement, a measure of the engine's size, which can vary from vehicle to vehicle. This specific gasket is engineered to fit the unique specifications of engines with this displacement, providing a tight seal to prevent oil leaks and maintain internal pressure.
- It can be modified for applications with large chemical exposure and hard vacuums.
Oil leak: the most frequent failure of the oil seal
- One of the standout features of the SSR 125 spark plug is its fine-tuned heat range
Different Type Rotary Shaft Oil Seal
- PTFE Oil Seals – Are a relatively new oil seal, the use of polytetrafluoroethylene means they can withstand dry and unlubricated operations. They have a massive thermal range spanning from -130°C to more than 200°C and a strong resistance to chemicals, they are the future of rotary shaft seals.

Full synthetic oil is ideal for vehicles that demand peak level performance and high levels of lubrication. Full synthetic oil provides higher viscosity levels, resistance to oxidation and thermal breakdown, and helps fight against oil sludge. Plus, it helps improve fuel efficiency and can even increase a vehicle’s horsepower by reducing engine drag.
The square shape of the gasket allows for a more precise fit in square or rectangular openings, ensuring a tight seal to prevent fluids or gases from escaping. Made from high-quality rubber materials such as neoprene, silicone, or EPDM, these gaskets offer excellent resistance to temperature, pressure, and chemical exposure.
Most oil seals consist of some basic elements that configure their structure, such as the sealing element, the metal case, and the spring:
The 38x52x7 oil seal is a popular size that is used in a variety of applications
. It is commonly used in automotive engines, industrial gearboxes, and hydraulic systems. The seal is designed to withstand the high speeds and temperatures that are common in these types of machinery, and it provides reliable protection against oil leakage.38x52x7 oil seal
