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KWO® MultiTex® Ring

ePTFE Gasket Ring

KWO® MultiTex® Ring is a high quality gasket material made from the original KWO® MultiTex® sheet with biaxially expanded PTFE structure. In the expansion process the PTFE material is biaxially stretched. Thereby the lengthwise and crosswise cold-flow tendency is reduced, the tensile strength is increased and the recovery property is substantially improved.
The flexible material adapts excellently to the sealing surfaces and compensates for considerable unevenness, even at changing temperatures and loads. Another advantage of the material is that the gasket sheet is merely compressed but not widened during installation.
KWO® MultiTex® gasket ring ensures always an excellent tightness under operating conditions. The product has very good recovery properties and a low leakage coefficient, even at reduced sealing pressure.
KWO® MultiTex® gaskets are suitable for all applications in which the high resistance of the PTFE material is required and where conventional gaskets reach their limits. The sheet is characterised by an almost full chemical resistance and is suitable for temperatures of up to 230°C.


  • excellent tightness; full resistance
  • best adaption to uneven surfaces and affected sealing faces
  • for sealing of stress sensitive material like glass lined steel, glass or ceramic
  • withstands high loads; very low cold-flow tendency
  • excellent recovery properties; suitable for changing loads
  • suitable for high-temperature applications
  • allows a precise mathematical approach to the sealing application
  • harmless in contact with food
  • 100 % biaxial expanded PTFE (ePTFE) without fillers
  • highest adaptability to uneven surfaces
  • high quality biaxial expanded gasket ring
  • perfect recovery also at reduced gasket stress
  • UV resistant; no ageing
  • non-toxic, biologically inert
  • non-flammable
  • all standard flanges according to DIN- and ANSI-standards
  • steel flanges
  • glass lined steel flanges
  • plastic material flanges
  • FRP flanges
  • glass and ceramic flanges
  • BAM - suitable for use with fluid and gaseous oxygen
  • proven by TA-Luft
  • compliant to FDA
  • EC1935/2004 - suitbale for applications with food contact
  • gasket characteristics pursuant to DIN EN 13555

Technical Data

RAW MATERIAL100 % biaxial expanded PTFE (ePTFE) without fillers
TEMPERATURE RANGErecommended temperature range: from -200°C to +230°C; material heat resistant up to +315°C
CHEMICAL RESISTANCEpH range from 0 to 14; full chemical resistance, except molten alkali metals and elemental fluorine
PRESSURE RESISTANCEresistant within the usual pressure range of standard flanges up to 60 bars; suitable for vacuum applications (depends upon the concrete installation conditions)
PHYSIOLOGICALLY INERTphysiologically harmless in all recommended applications