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RMA OS-1-1: Shaft Finish Requirements for Radial Lip Seals.

Primary Standard:

RMA OS-1-1 is a standard from the Rubber Manufacturers Association (RMA) that specifies the requirements for shaft surface finish and lead angle for radial lip seals.

The RMA standard also discusses methods for measuring these parameters, including the string method for lead and a stylus profiler for surface texture.