This paper consists of a brief history of the origin of the Sealectors and Sealraters, a description of the more popular models of machines, their capabilities, and the improvements made since their conception.
The Sealectors are air gaging machines for measuring the inside diameter and the lip opening pressure of lip type shaft seals. The machines are available as laboratory models or as semiautomatic bench type or fully automatic models for production testing of seals.
The Sealraters are machines for endurance and performance testing of lip type shaft seals under simulated conditions encountered in their application. The Sealraters are generally used as laboratory equipment for determining specifications to be applied to seals.