| 摘要 |
A composition of matter adapted for use as a sealing material and in fabricating bushings, rider rings and structural support pads. The composition is sintered polytetrafluoroethylene (PTFE) having uniformly dispersed therein from 5 to 50 volume percent of filler particles selected from the group consisting of glass particles and mineral particles having a Rockwell C hardness of between 10 C to 50 C wherein the filler particles are present in the polytetrafluoroethylene when the sintering occurs. Lead glass, soda-lead glass and soda-lime glass are among the filler particles which are incorporated into the PTFE to form structurally strong compositions which generate low amounts of wear debris.
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