Seals without metal reinforcement

Be sure that the shaft surface and housing bore are clean and that they meet the specifications listed in the sections Shaft requirements and Housing bore requirements. Special care must be taken to avoid nicks and burrs on the shaft and to make sure that the spring is retained in the spring groove.
HS seals are installed differently depending on whether their main purpose in a specific application is to retain lubricant or to exclude contaminants (fig 1).
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