January 01, 1970
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MK1301 is made of industrial grade graphite impregnated with PTFE mixture and inert lubricant.
Made of ramie fiber by braiding, impregnating with graphite, and shaping with silicon oil...
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.
