Spring The spring supplements the tightening force (i.e., the lip radial load) to ensure enhanced sealing performance and tight contact between the shaft and the sealing edge.The spring also prevents the deterioration of main lip sealing performance caused by high heat or other such factors.

The pulley is kept from turning on the crankshaft by a key fitting into grooves on the crankshaft and pulley.
When considering auto parts spark plugs, it is essential to prioritize quality, compatibility, and performance. Iridium spark plugs are known for their longevity and consistent performance, making them a preferred choice for discerning vehicle owners and automotive enthusiasts. The selection of high-quality iridium spark plugs for motor vehicles can contribute to optimized engine operation, improved fuel economy, and reduced maintenance requirements, ensuring reliable performance over an extended service life.
A: with minor lip

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Trailer Hub Oil Seal:
• Rubber material
• Seal type, etc.
In addition to these standardised types, the following special types are also available: