Oil seals come in different sizes and are measured by their inner and outer diameters and thickness. You should measure the dimensions of the original seal to ensure that you get the right size replacement. If you don't have the original seal, you can measure the shaft or housing and use those dimensions to identify the appropriate size of the oil seal.
Design: Oil seals come in various designs, including single lip, double lip, and triple lip. The lip refers to the part of the seal that makes contact with the shaft or housing. A single lip seal has one lip, a double lip seal has two, and a triple lip seal has three. Double and triple lip seals are more effective at preventing leaks than single lip seals.
in automotive applications. Double lip seals are more effective than single lip seals at preventing oil leaks, and they are commonly used in applications that require high levels of sealing performance, such as in the automotive, aerospace, and industrial sectors.
The second lip provides a cushion of oil that helps to lubricate the seal and reduce heat buildup, which can cause premature seal failure.These are often used alongside suspension systems and control arms to prevent leakage and contamination.