What is the preferred method to ensure tightness when using a lip seal?

The preferred method to ensure tightness when using a lip seal involves adding a sealant like Loctite, which helps to enhance the seal's effectiveness by filling in any gaps or imperfections between the surfaces it contacts. When applied properly, this adhesive creates a stronger bond and prevents leaks, improving the overall performance of the seal in various environments.

Using excessive lubricant may cause the seal to become less effective by creating a barrier that can diminish the contact between the sealing lip and the surface it is designed to seal. Adding a washer can sometimes be helpful but is not typically a standard practice for ensuring the effectiveness of a lip seal, as it may not address the sealing surface issues or gaps. Opting for a larger seal might result in a fit that is not suitable for the assembly and could lead to improper sealing, as it might not sit correctly in the housing or may interfere with other components. Therefore, adding a sealant like Loctite is the most reliable method for achieving a secure and tight seal.