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• 16:52, 21 March 2024 John Leach talk contribs deleted page Kel-F/Definition (content was: "<noinclude>{{Subpages}}</noinclude> PCTFE (PolyChloroTriFluoroEthylene) polymer consisting of chlorotrifluoroethylene and vinylidine fluoride in a 3:1 ratio; most common name and trademark of 3M but no longer manufactured by the company — others Neoflon and Aclon; used in valves with low friction and high ch...", and the only contributor was "[[Special:Contributions/imported>Howard C. Berkowitz|imported>Howard C. Berkowitz]]" ([[User talk:imported>Howard C. Berkowitz|talk]]))