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High vacuum stopcock that eliminates exposure to corrosive materials. Use to at least 13.6 Kg internal pressure. Variable openings from 0-3mm to 0-10mm. Ultimate vacuum of 10-7 can be realized with standard three seals. Smooth acting valve permits fine adjustment of opening. Front ring seal makes a positive closure against a precision-formed heavy glass seat. PTFE plug is NOT bakeable.
Barely used, excellent working condition
No residuals or chips