PACKING SET FOR A ROTARY SHAFT AND METHOD OF MAKING THE SAME

摘要

A packing set is disclosed for use with pumps, mixers, valves and agitators having a rotary shaft, the packing set including a upper end ring, a lower end ring and a plurality of center sealing rings. The plurality of center rings are disposed between the upper end ring and the lower end ring and axially aligned with respect thereto. Each center ring has a body portion defined by an inside diameter and an outside diameter and is formed from a material which comprises a base rubber and at least about 25 percent by weight fluorine.