... resistance Acid and alkali resistan Standard High Temperature PTFE Seal Thread Tape Color: White, Black,Brown &Grey.Thickness: 3.5 milsWidth ... for use on all threaded fittings for passage of water, gas, oxygen, chemicals, and other fluids or gases.PTFE tape is ... passage of water; potable and non-potable, most chemicals, oxygen, gas, hydraulic and high pressure lines.CHEMICAL PROPERTIES: inimum of 99 ...