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The numerical designation 20% 35% 7% in the context of oil seals can represent several key attributes such as height, diameter, and material composition. Understanding these specifications is crucial for selecting the appropriate oil seal for a given application.

1. Single Lip Seals These seals feature one sealing lip and are often used in applications where there is moderate exposure to contaminants. They are favored for their simple design and effective sealing capabilities.

2. Inspect Components Before installation, inspect all components for damage or wear. Any damaged parts should be replaced to prevent premature failure.