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Another advantage of this size is its durability. The extra width provides more material to work with, which can result in a stronger and more durable final product The extra width provides more material to work with, which can result in a stronger and more durable final product
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- However, it's worth noting that despite their many strengths, PTFE oil seals have their limitations. They may not be as suitable for high-speed applications due to their relatively low tensile strength and creep resistance. Nonetheless, these limitations are often countered by incorporating additional materials or design modifications.
Material Code ISO 1629
Materials used
An overview of the different standard types of oil seals and their main characteristics is shown below.
Set the gasket on the block and make sure that all holes are perfectly aligned before refitting the head (See How to remove a cylinder head ).

ff 10 spark plug. Whether you drive a compact car, a heavy-duty truck, or a high-performance sports car, you can trust that this spark plug will deliver the performance and reliability you need.
Types of Oil Seals in Application
Refit the rocker or cam cover, aligning its fixing holes with those on the head. Check that the gasket edge aligns with the cover flange all round, and is not distorted. If necessary, adjust it gently with tweezers or long-nosed pliers. Tighten bolts evenly to just compress the gasket.