PTFE Gaskets & Seals

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We manufacture PTFE Gaskets from our complete range of Polytetrafluoroethlyene (PTFE) materials. Commonly referred to as Teflon (The well known brand name of The Chemours Company), PTFE has outstanding resistance to chemicals, a wide temperature range, withstanding (–200° C to +260° C) and excellent dielectric properties.

Being chemically inert, except for some alkaline metals, means PTFE Gaskets are the seals of choice in food, pharmaceutical and chemical sectors.

PTFE can be divided into two main styles. Virgin PTFE, which is fairly hard, like plastic, however it will still compress to make a seal between two faces. Expanded PTFE is more like a sponge, making it ideal for sealing damaged, glass or plastic flanges because it compresses more easily than the Virgin grade.

As one of the largest gasket cutters in the United Kingdom, we make and supply PTFE gaskets in a broad range of different variants including, etched and filled grades.

We also manufacture PTFE Envelope gaskets in-house. The PTFE Envelope is fitted on the inside diameter (bore) of the gasket. The gaskets are usually made from non-asbestos fibre or rubber. The advantage of this style of gasket is that it combines the inertness of PTFE with the mechanical properties of the outer gasket. Above all, because the envelope only covers the bore, it saves you the expense of a complete PTFE gasket.

Main Benefits of PTFE

Low coefficient of friction
Excellent chemical inertness
Non-adhesive surface
Wide temperature range withstanding (–200° C to +260° C)
Excellent dielectric properties
Filled grades available
Can be supplied etched, if bonding is required
Most grades are both FDA/EC1935:2004 and WRAS Compliant

Gore Gasket

Grades of PTFE that we manufacture Gaskets from

Click on the links below to download a data sheet on the different grades.

Virgin PTFE

Virgin PTFE

The compressive strength at a certain predetermined compression value is one of the most significant mechanical characteristics of PTFE, in a wide range of service temperatures.

Expanded PTFE

Expanded PTFE is the material of choice for a number of industries and media including oils, petrol, chemical, gas, food and pharmaceutical where a low pressure seal is requied.

Etched PTFE

Etched PTFE

Flexibility strength, plastic memory and hardness, are additional characteristics of PTFE products and with this grade being etched on one side, means it can be bonded.

25% Glass Filled PTFE

25% Glass Filled PTFE

With this grade being 25% Glass Fibre filled it exhibits enhanced wear resistance and enhanced chemical resistance (except for alkali and hydrofluoric acid) over other PTFE grades.

Garlock PTFE Styles

As an authorised Garlock distributor we carry the complete Gylon® range to be converted into gylon gaskets. Visit our dedicated Gylon® page, or see below for links to data sheets on each style.

Gylon® BIO-LINE®

Gylon® BIO-LINE®

GYLON BIO-PRO® gaskets provide a durable and safe solution for protecting the integrity of food and pharmaceutical processing media. Their modified and restructured PTFE material is pre-formed and stress controlled for all standard TRI-CLAMP connections. It is dimensionally stable and resists intrusion.

Gylon® 3565 Envelon

Gylon® 3565 Envelon

ENVELON™ is a high performance, aluminosilicate microsphere filled PTFE gasketing material which is designed to compress and conform to irregular surfaces, giving it a tight seal on glass-lined and wavy flanges. It is available in either sheet or cut gaskets.

Gylon 3545

Gylon® 3545

Another highly compressible microcellular PTFE but with a rigid PTFE core for improved handleability. It is designed to compress and conform to irregular or damaged surfaces, making it suitable for flanges that generate lower compressive stresses, like glass-lined flanges.

Gylon® 3540

Gylon® 3540

This highly compressible, microcellular PTFE gasketing material is designed to compress and conform to irregular or damaged surfaces, making it suitable for flanges that generate lower compressive stresses, such as lined flanges and equipment.

Gylon 3510

Gylon® 3510

The GYLON® Style 3510 is a high performance, barium sulfate filled PTFE gasketing material designed for use in strong caustics and toxic chemicals, such as chlorine, ammonia, and phosgene.

Gylon 3504

Gylon® 3504

The GYLON® Style 3504 gasket is made of PTFE with aluminosilicate microspheres. It is designed for use in moderate concentrations of acids, caustics, hydrocarbons, refrigerants, and more.

Gylon® 3501

Gylon® 3501

The first choice for universal applications in the chemical and petrochemical industries. The combination of high pressure/temperature (P x T) and minimal cold flow far exceeds the performance of conventional PTFE.

Gylon 3500

Gylon® 3500

The GYLON® Style 3500 is a high performance, silica filled PTFE sheet material designed for use with strong acids, solvents, hydrocarbons, and other aggressive media.

Flexitallic PTFE Grades

Sigma® 588

Sigma® 588

SIGMA® 588 is a high performance biaxially oriented PTFE sheet sealing material with enhanced handling & low stress sealing characteristics

Sigma® 533

Sigma® 533

SIGMA® 533 is a high performance biaxially orientated sheet sealing material containing PTFE with barium sulphate (barytes) filler.

Sigma® 511

Sigma® 511

SIGMA® 511 is a high performance biaxially orientated sheet sealing material containing PTFE with silica filler.

Sigma® 500

Sigma® 500

SIGMA® 500 is a high performance biaxially orientated sheet sealing material containing PTFE and hollow glass microspheres.

Klinger & Gore PTFE Gaskets

Top-Chem 2006

Top-Chem 2006

Modified PTFE material with excellent chemical resistance and good mechanical properties. Suitable for a wide range of applications in the chemical, pharmaceutical and food industries including strong alkaline conditions.

Top-Chem 2005

Top-Chem 2005

Modified PTFE material with excellent chemical resistance and good mechanical properties. Suitable for a wide range of applications with the exception of strong alkaline conditions.

Top-Chem 2003

Top-Chem 2003

Highly compressible, modified PTFE material with outstanding chemical resistance. Ideal for applications where bolt load is limited or where flanges are delicate e.g. glass-lined equipment.

Top-Chem 2000

Top-Chem 2000

Premium grade, heavy-duty PTFE gasket suitable for a wide range of applications within the chemical and petrochemical industries. The only PTFE based gasket material on the market to hold fire safe approval.

As with all types of gaskets, it is recommended that the material type is tested for suitability as grades do vary.
We are happy to advise on any application, but final responsibility lies with the customer.

PTFE Gaskets Enquiry

Simply give us a call or fill in the enquiry form and one of our experts will give you all the advice and guidance to meet your rubber gasket requirements.