January 01, 1970
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Made of polypropylene fiber by reinforcing, braiding and impregnating with PTFE. It has high strength...
Each PTFE graphite yarn is covered with aramid fiber in its center
Outer ring grooving machine design for making groove of outer ring of spiral wound gasket, controlled by air pump. No longer expensive lathes need; one worker can see after more then 10 machines in same time.
