- Industrial Pump
20 - In conclusion, high pressure oil seals are indispensable components in industries that rely on hydraulic systems, such as automotive, aerospace, construction, and manufacturing. Their effectiveness in containing high-pressure fluids, preventing leaks, and maintaining system cleanliness is paramount to the overall performance and longevity of the equipment. As technology advances, so does the development of these seals, promising even higher pressure ratings, improved chemical resistance, and enhanced sealing capabilities for the future. Understanding the importance and proper handling of high pressure oil seals is vital for ensuring the smooth operation and safety of any high-pressure system.
Figure 3: Sealing function of main lip radial load
* KOYO is a registered trademark of JTEKT.
Automotive Gaskets: Diverse Applications and Materials
1) Common seal types and their features
2. Metal Case

NBR, also known as nitrile rubber or nitrile, is the most popular material for an oil seal because of its good resistance to many oils and greases, such as mineral grease and hydraulic oil. Depending on their composition, synthetic oils and greases, such as those based on glycol, can damage NBR rubber materials. Depending on the amount of glycol, a PTFE lip seal may be the best choice. NBR is also unable to cope with contact with acids and solvents. The rubber is suitable for oil and grease at temperatures from -35 °C to 100 °C.
Metal O.D. wall
(with a reinforcing inner metal case)
These are now the current and most recent innovation that is taking over from the HID and Halogens. The LEDs employ the diodes technology where they produce light when electric current excites their electrons. They require low power and energy and still produce brighter light than halogen headlights which also leads to LEDs’ longer life-span. Their diodes can be manipulated into various shapes providing unique configurations. With LED technology, the vision is much improved and more focused. Although the initial cost of HID and halogen bulb is less than LEDs, the operational and maintenance costs of LED are significantly lower. LEDs, having a longer life, reduce maintenance and lamp replacement cost. Because LEDs need to be replaced less frequently, the owner spends less on new lamps and the labor needed to change them. LEDs also consume less energy; thus the overall cost of a LED system can be significantly lower than that of conventional lighting systems.
Due to having a higher density, Viton has the widest temperature range of -40°F to over 400°F (-40°C to over 240°C) making it a perfect choice for higher temperature applications. Viton® also has the largest range of chemical resistance, i.e., it is resistant to silicone oil and grease, mineral/vegetable oil and grease, aliphatic, aromatic, and chlorinated hydrocarbons, non-flammable hydraulic fuels as well methanol fuels, and more.
In addition to preventing oil leakage, the piston oil seal also helps to reduce friction between the piston and the cylinder wall. This is important for maximizing engine efficiency and prolonging the life of the engine components. By reducing friction, the seal helps to improve fuel economy and reduce wear and tear on the engine.
piston oil seal
