PTFE

PTFE Gaskets (Teflon® Gaskets)

Commercial Gasket & Packing is a manufacturer of high quality PTFE (Teflon®) gaskets, seals, washers and insulators. We fabricate custom PTFE products by means of die cutting, stamping, punching, water jet cutting, and laser cutting. Polytetrafluoroethylene (PTFE) is DuPont’s trademark of Teflon®. It is a synthetic fluoropolymer of tetrafluoroethylene consisting completely of carbon and fluorine. It is innately hydrophobic (repelling water and water containing substances) and has one of the lowest coefficients of friction against any solid. PTFE has excellent dielectric properties and provides excellent thermal insulation with an operating temperature range of -400°F to 500°F. PTFE is the most chemically resistant plastic known and is unaffected by most corrosive liquids, vapors, and gases. PTFE is generally offered in thicknesses spanning from .002″ to .250″ thick and conforms to both FDA and AMS specifications, making it acceptable to both medical and food production industries. Commercial Gasket & Packing can custom manufacture quantities from prototype and short run through large production runs. We will fabricate custom PTFE components to your precise specifications. Commercial Gasket & Packing takes pride in its ability to consistently provide precision PTFE (Teflon®) products guaranteed to meet your specifications and function perfectly within your application.

The three basic types of PTFE (Teflon®) materials include: Virgin Teflon®, Filled Teflon® and Expanded Teflon®.

PTFE, Unfilled Teflon® Gaskets (Virgin Teflon® Gaskets)

Virgin grade PTFE (Teflon®) gaskets are made from 100% pure material which is used in most general applications. It is extremely soft and formable and is often used for chemical resistant seals and gaskets. It is made directly from the resin producer and has never been processed into a shape. It possesses the highest physical and electrical insulation properties and has increased resistance to creep (compression) under load. Virgin grade PTFE can be recognized by its whiter color compared to mechanical grade PTFE.

PTFE, Filled Teflon® Gaskets

Filled PTFE (Teflon®) gaskets are made from PTFE which integrates additives and fillers in order to improve the performance of the gasket. This improves the gaskets ability to wear and enhances its unique combination of chemical, physical and electrical properties. Filled Teflon® is the most common type of PTFE gasket for industrial use as it exhibits improved mechanical strength compared to Virgin PTFE. Glass, carbon and fiber particles are typical fillers that are used to enhance the mechanical strength of the gasket depending on the application.

PTFE, Expanded Teflon® Gaskets

Expanded PTFE (Teflon®) gasket material is produced by expanding Virgin PTFE using a process that creates a uniform and highly fibrillated microstructure with equal tensile strength in all directions. This means that expanded Teflon® possesses no structural weakness or a “grain”. Since no additives are required, expanded Teflon® also possesses the unique chemical resistance of Virgin Teflon®. Expanded PTFE is much softer and more flexible than regular PTFE gaskets and thus conforms easily to irregular and rough surfaces. The material is easier to compress and minimizes creep and cold flow.

Commercial Gasket & Packing fabricates custom PTFE (Teflon®) gaskets using a broad range of well known PTFE material brands such as; Garlock®, Thermoseal® (Klinger®), Durlon®, Frenzelit®, Flexitallic® and Teadit® in various styles and thicknesses. PTFE gaskets can be supplied with or without pressure sensitive adhesive (PSA) backing.

Garlock® Gylon®

Gylon® Style 3500: PTFE with silica filler. Its main features include: excellent chemical resistance, improved performance over conventional PTFE, resistant to cold flow and creep, excellent bolt-load retention, outstanding dimensional stability under thermal stress, and resistance to wear and abrasion. It is fawn in color.

PTFE Joint Sealant

Teflon® is a registered trademark of the DuPont™ Company.

Please visit our gasket materials page for more information on our extensive selection of materials.

For more information on custom PTFE (Teflon®) products or to speak with one of our knowledgeable professionals, please feel free to Contact Us or complete our online Request For Quotation form