PTFE® Joint Sealant Expanded PTFE® Joint Sealant  This material is soft and pliable, allowing it to readily conform to and seal irregular surfaces. This material is non-toxic and it fulfills the FDA PTFE® Regulations. This material is being utilized in new applications everyday throughout many types of industry. This style is recommended for the following sealing applications: Metallic Joints, Pipe Fittings, Pump Casings, Power Plants HVAC Ducts, All Types of Flanges, Air Compressor Rings   Lift Systems, Water  Plants, Waste-water Treatment Plants Copper Rings, Glass Surfaces, Chemical Plants, etc... Specifications Temperature Limits from -450°F to 600°F 0-14 pH Range Good in most chemicals (except molten alkali metals & elemental fluorine)  Sealing pressure from full vacuum to 3000 psi internal pressure can be achieved and depends on a number of factors including: Flange type and pressure rating - ANSI 150lb., 300lb, etc. Flanges with higher pressure ratings have more or larger bolts and heavier flanges allowing higher gasket loads.  Condition of the flange surfaces - Expanded PTFE joint sealant is more conformable than other more rigid gasketing materials for better sealing of scratched or pitted surfaces.  Temperature - Higher temperatures provide lower sealing pressure capability. Type of liquid or gas being sealed - Liquids generally require less load to seal than gases. The surface tension of PTFE for a particular fluid is also a factor.  Temperature Cycling - Thermal cycling can cause problems if the cycling results in significantly reduced pressure on the gasket. Installation of spring washers on the flange bolts is a proven means of minimizing temperature cycling effects.    Black Box Industrial Supply, Inc. Phone (770) 642-2435  Fax (770) 643-0643 Roll Size Bulk Spools 1/8" x 50 ft 1/8" x 500 ft 1/4" x 50 ft 3/8" x 25 ft 1/4" x 500 ft 3/8" x 250 ft 1/2" x 15 ft 1/2" x 150 ft 5/8" x 150 ft 5/8" x 15 ft 3/4" x 100 ft 1" x 75 ft   3/4" x 20 ft 1" x 15 ft Return To Teflon® Products