Outstanding chemical resistance > Non-corrosive, non-wetting, non-contaminating and odourless > Excellent electrical and thermal insulation when in virgin PTFE form Pure PTFE Gasket is made by cutting PTFE stick, pipe and sheet into flat shape, V shape gasket and valve annulus. It has 100% PTFE structure. It can be bear the most bitter chemical medium, and has good anti-creeping performance. Prime Features > Acid and alkali resistant > Chemical resistant > Has minimum friction coefficient of all know pure material > Non-viscous, no aging > Now molds can be made according to customers requirements. Specification Apparent density: 2.10~2.30g/cm3 Tensile strength: 15.0Mpa Ultimate elongation: 150%