January 01, 1970
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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.
Made of polypropylene fiber by reinforcing, braiding and impregnating with PTFE. It has high strength...
Woven with high-quality expanded glass fiber, it is a high-quality thermal insulation material and an ideal substitute for asbestos cloth.
