- One of the key benefits of metal oil seals is their durability and resilience. Made from high-quality metal materials such as stainless steel or carbon steel, these seals are able to withstand high temperatures, pressure, and wear and tear. This makes them ideal for use in demanding industrial environments where they are exposed to harsh conditions.
Typically used in hydraulic high-stress applications where compounds under high pressure are exposed to wear, the benefits of polyurethane seals include:
• Fkm/viton rubber
Figure 14.4. Effect of aeration on oil aging.5 Chart shows percent retained elongation after aging for 28 days at 150°C in Mobil 276.
The piston oil seal is located between the piston and the cylinder wall. Its main function is to seal the combustion chamber and prevent oil from leaking into the combustion area. This is essential for maintaining proper lubrication of the piston and preventing damage due to overheating and friction.
The temperature range of nitrile is −35° to 120 °C (−30° to 250 °F). Due to this wide range, NBR seals can be used for gas oil, silicone oil, animal/vegetable oils and fat, hydraulic liquid as well as hot and cold water. In addition, NBR is oil resistant and has an excellent abrasion resistance, so for any application that demands shock absorbers, NBR is a perfect choice to go with.
5. TYPES OF FLUID: Numerous oil seals can interact with oils, fuels, grease, water and more. However, know exactly what type of fluid the rotary shaft seal will be in contact with will ensure the longevity of the seal and the machinery.
Shaft Surface Finishing

A mechanical tool called an oil seal keeps lubricant from leaking out of the machine. It accomplishes its goal by sealing the equipment’s moving and stationary parts. Additionally, it prevents impurities from getting inside the machine and shortens its lifespan, an important role it completes. Numerous oil seals exist, including PTFE lip oil seals, rubber fabric oil seals, and rotating V-seals. An oil seal kit is a set of oil seals with the necessary dimensions and desired characteristics. An oil seal kit is more cost-effective and advantageous than buying individual oil seals.
As shown in Figure 1, sealing devices come in two types: contact and non-contact.
Oil seals are among the major contact type sealing devices.
Maintenance and Replacement of Spark Plugs
Several variables must be considered when selecting oil seals. The physical dimensions and materials will vary depending on the environment of use. In addition, oil seals must remain lightweight, compact, and exhibit high self-lubrication performance.
