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PTFE Gaskets, Seals & Washers

PTFE gaskets, PTFE seals, PTFE washers and PTFE envelopes have been manufactured by the Hennig family since the material was introduced in the 1940's.  Today we custom fabricate from this material using our in-house technology which includes waterjet cutting, flash cutting and die cutting.  Our 100+ years of experience has built a proven track record of delivering high performace PTFE gaskets and washers that meet or exceed the tolerance requirements of each application.  We are committed to on-time delivery and exceptional customer service.

Our facility accommodates the custom manufacturing of single prototype PTFE gaskets or large scale production runs manufactured from your blueprint or reversed engineered from a sample part.  Depending on the type of PTFE material, we can cut between .015" - .50" thick.

PTFE Gasket, Seal & Washer Applications

PTFE provides excellent thermal insulation and is the most chemically resistant plastic known.  It is unaffected by most corrosive liquids, vapors and gases, and conforms to both FDA and AMS specifications.  PTFE will insulate to 500 volts per mil and does not melt.  Because of these properties, PTFE gaskets, washers and seals are used in the following industries:

  • Electrical Applications
  • Food, Beverage & Pharmaceutical
  • Laboratories
  • Petrochemical & Chemical Processing
  • Semi-Conductor

PTFE Gasket, Seal & Washer Material 

PTFE resin performs well in many applications without fillers i.e. in its "virgin" state.  In fact, fillers can lessen its outstanding electrical and chemical properties.  In mechanical applications, however, compounds of PTFE and inorganic fillers offer imporved wear resistance, reduce creep and initial deformation, and increaed stiffness and condcutivity.  Hardness is increased, and the coefficient of thermal expansions is decreased. Compounds can therefore make it possible to gain the advantages in applicaitons where the unfilled resin cannot be used.
Hennig Gasket & Seals is a distributor of a variety of PTFE (polytetrafluoroethylene) material.  Considered to be one of the most commonly available gasket materials in the marketplace today, we offer the following solid sheets (virgin PTFE), skived, reinforced and 100% expanded PTFE material: 

Reinforced PTFE with silica filler resistent to:  Strong acids (except hydrofluoric), solvents, hydrocarbons, water, steam, chlorine, and cryogenics.  Conforms to FDA regulations.

Reinforced PTFE with glass microspheres filler resistent to:  Moderate concentrations of acids and some caustics, hydrocarbons, solvents, water, refrigerants, and cryogenics.  Conforms to FDA regulations. Glass has little effect on most of the electrical properties of PTFE.

Reinforced PTFE with barium sulfate filler resistent to:  Strong caustics, moderate acides, chlorine, gases, water, steam, hydrocarbons, and aluminum fluoride Conforms to FDA regulations.

Expanded PTFE sheet is much softer and more flexible than regular PTFE and thus conforms easily to irregular and rough surfaces.  The material is easier to compress and minimizes creep and cold flow.  Conformas to FDA regulations.

PTFE Film (virgin solid sheet)

Additional PTFE material is available upon request.

The experienced team at Hennig Gasket can assist you with all your custom PTFE gasket and seal needs – contact us today to experience our fast service.