- Carefully insert each new spark plug into the engine and hand-tighten them using the spark plug socket. Be sure not to over-tighten, as this can damage the threads in the engine. Once the spark plugs are in place, use the ratchet wrench to securely tighten them.
- One of the key properties of high heat rubber gaskets is their ability to withstand temperatures well above normal operating ranges. These gaskets are made from specially formulated rubber compounds that are resistant to heat, making them ideal for use in applications where temperatures can reach up to 500 degrees Fahrenheit or higher. This allows them to maintain their integrity and sealing properties even in the most extreme conditions.
- In conclusion, the significance of steering oil seals in automotive engineering cannot be overstated. They are the unseen heroes that safeguard the power steering system, ensuring a smooth driving experience. Their proper functioning is vital for not just the vehicle's performance but also for safety, as a compromised steering system can directly impact a driver's ability to control the car. Therefore, understanding and appreciating the role of these seals is essential for every car owner and mechanic alike.
The sealing element, also known as the sealing lip, forms the interior of the oil seal. Various materials can make up the lip depending on the application’s specific needs. Below are some commonly used materials:
Over time, piston oil seals may wear out or become damaged due to normal wear and tear, extreme temperatures, or poor maintenance practices. When this happens, oil leakage can occur, leading to decreased engine performance and potential damage to the engine.

Seals are classified by O.D. wall material, lip type, and whether they have a spring or not.
Major oil seals are specified in ISO 6194-1 and JIS B 2402-1.
Table 2 shows the common types of oil seals, while Table 3 shows the features of each type of oil seal.
Table 4 lists the JTEKT oil seal type codes and corresponding ISO and JIS standards.
An oil seal is designed to perform three major functions: to prevent lubricants from leaking outside the seal even under high pressure, to act as a barrier to retain the lubricating oil, and to prevent dirt and other contaminants from entering the unit.
All are fitted with a spring to preload the sealing lip. All these types are for non-pressurised or low-pressure applications up to 0.5 bar for diameters of a limited size. For diameter of 500 mm or more, the maximum pressure is 0.1 bar. For higher pressures, special types or PTFE lip seals can be used.
Standard Sealing Case Designs


Fluid Types - Various oil seals are able to withstand interactions with oils, fuels, grease, water and more. Knowing what type of fluid the rotary shaft seal will be in constant contact with will ensure the longevity of the seal and surrounding components.
Standard 3760/3761
The metal case is the exterior (or frame) of the oil seal, the principal function of which is to give rigidity and strength to the seal. The material of the case must be selected depending on the environment where the seals are to be used. Often the metal case is covered by the same rubber material used in the sealing element, which also helps seal the exterior of the oil seal in the housing bore. Common case material types are: