PTFE plastic sheet comes in a roll in the .005 - .020 thickness. If you order more than 1 pc, it will be cut from a roll. In thicknesses greater than .020, we stock a 48 x 48 and cut to the increments you see listed. From these sizes, ANY size can be cut or machined!   PTFE has the highest melting point and is capable of continued service at 500F(260 C). FEP is a melt processible resin capable of continued service at 400F(204 C). PTFE products are used as gasket and packing materials in chemical processing equipment; as electrical insulation for maximum reliabillity; and in bearings, seals, piston rings and other mechanical applications, especially those requiring anti-stick characteristics. PTFE has excellent thermal and electrical insulation properties. And, it has a low coefficient of friction. It is difficult to make anything adhere to PTFE. A material may stick to it, but the material can be peeled off or rubbed off. Item specifics: Width:    3/4"    Shape:    Continuous Roll    Tensile Strength:    19 lb./in.    Material:    Extruded Silicone Free PTFEAdhesion Strength:    48 oz./in.    Color:    BrownPerformance Temp.:    40 Degrees to 350 Degrees F    Length:    5 yd.Adhesive:    Rubber    Thickness:    4 milRolls/Case:    10