Werner Ludwig Tisch

Hermann-Oberth-Straße 9
D-85640 Putzbrunn

phone: +49 (0) 89 / 43 57 93-37
fax: +49 (0) 89 / 43 57 93-38


WT-A PTFE Dichtungsplatte

WT-A Gasket sheets consist of 100% pure virgin expanded PTFE (ePTFE). The special stretching process used in manufacturing produces a multi-directional fibrous structure, giving the gasket material specific characteristics and properties. PTFE Gaskets of WT-A gasket plates have only a minimal increase in width, have an extremely low creep and feature an exceptional adaptability to unevenness and damages on the flange surface.


Advantages and possible applications

Due to the universal resistance of PTFE material to chemicals, its pressure stability and its high adaptability WT-A PTFE gasket sheets may be used in nearly all application areas, within the admissible temperature range.
They are used for sealing in frictional connection. The PTFE gasket material is especially suitable for applications with limited bolt force, very uneven sealing surfaces and stress-sensitive components with flange materials such as enamel, graphite, glass, GRP, aluminium, etc. Complex and precise gasket shapes as well as PTFE gasket rings out of WT-A may be cut or punched. Typical examples are gaskets for heat exchanger, agitator flanges, pipeline flanges and pressure vessels.


Chemical resistance of PTFE material

pH 0-14 chemicaly resistant to all media, except dissolved or molten alkali metals and elemental fluorine at higher temperatures and pressures.


Temperature resistance of PTFE material

-240° C to 270 ° C, intermittent to 315 ° c.


Recommended operating ranges

Pressure : Vacuum up to 40 bar
Temperature : -240° C to 230 ° C


Delivery sizes

WT-A PTFE gasket sheets are delivered in the standard dimension 1100 x 1000 (mm x mm)
Standard thicknesses are 0,5 / 1,0 / 1,5 / 2,0 / 3,0 / 4,0 / 5,0 / 6,0 / 7,0 / 8,0 / 9,0 / 10,0 mm.
Other sizes and punched gaskets are available on request.