Pressure Ratings Of Mechanical Seals

Lecturepg. 7Although mechanical seals are widely used in many machines, there is no universally accepted system for establishing limits of pressure, temperature, and speed. As a result, manufacturers of mechanical seals may use different methods for stablishing these limits. In turn, users of mechanical seals sometimes have their own rating system. Presented here is a general discussion of the difficulties involved in establishing limits along with some specific issues relating to seals used in centrifugal pumps. Recommended definitions are given or terms to be used in establishing pressure ratings of mechanical seals in centrifugal pumps. Some simplified methods for evaluating the suitability of commercially available mechanical seals in particular services are presented and discussed