sealing products

PTFE Gaskets

Properties and Application


PTFE gaskets are one of the most suitable types of gaskets for a variety of sealing applications and are mostly based on virgin PTFE or filled PTFE.

PTFE gaskets are excellent in applications involving solvents,
corrosive chemicals and high temperatures.

PTFE gaskets have an extensive range of applicability as it is a fluoropolymere, which features an outstanding chemical resistivity to almost all chemicals, good thermal insulation properties, and useful mechanical and processing characteristics.

They can be mostly used in valve seats, bearings, requested to resin sliding and chemicals, elastic bands for an-lubricated compressors, O-rings where elastomers can not withstand.

An extended range of improved mechanical and processing properties can be additionally reached by a combination of virgin PTFE and different fillers such as Glass, Carbon, Graphite, Bronze, Calcium and Moly-Disulphide.

Expanded PTFE Gaskets and Seal materials consist of virgin PTFE with multidirectional fibrous and/or porous structure, which the extruded PTFE consists of. A special manufacturing process provides the material with special chemical and physical properties. This can be of advantage in wide range of the applications.




Virgin PTFE, PTFE compounds and expanded PTFE offer a wide range of compounded products with good mechanical, electrical & thermal properties, chemical resistance, low friction coefficient and good resistance to wear.

Shape and Construction

There are different types of PTFE gaskets for each particular sealing application – Such as  Ring, full face, flange and envelope gaskets.
A PTFE envelope gasket is a gasket that is split or machined from the outside diameter wall to 1/16 of an inch from the inside diameter. Envelope gaskets can be supplied slit/v-type or milled/square cut with or with out a filler.
A ring gasket has a thickness, inside and outside dimension.

A full face gasket has a thickness, inside and outside dimension along with bolt holes.
A flange gasket is primarily the same as a full face without
The bolt holes.
These gaskets are available in standard and metric pipe sizes up to
60" outside diameter.

Typical Dimensions of PTFE Gaskets

Id x od (inches)

Id x od (inches)


1/2" x 1-7/8"

6" x 8-3/4"

3/4" x 2-1/4"

8" x 11"

1" x 2-5/8"

10" x 13-3/8"

1-1/4"x 3"

12" x 16-1/8"

1-1/2" x 3-3/8"

14" x 17-3/4"

2" x 4-1/8"

16" x 20-1/4"

2-1/2" x 4-7/8"

18" x 21-5/8"

3" x 5-3/8"

20" x 23-7/8"

4" x 6-7/8"

24" x 28-1/4"

5" x 7-3/4"


Metric Sizes are also available on request.







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