... life 4.quick delivery and low price always PTFE round slip ring with holesWe specialized in processingall kinds of gaskets and mechanical ... parts.such as valves ,shafts ,flanges ,and their accesories.equipped with complete set processing machines:boring lathe ,miller ,punch press ,press ... :+86 510 8652 1310 Fax: +86 510 8652 9579 PTFE round slip ring with holes