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KWO® CellFlon® white

ePTFE gasket tape

KWO® CellFlon® white is a gasket tape made from expanded virgin PTFE with a modified texture. The patented CellFlon® processing method improves considerably the mechanical properties and strengthens the fibre structure. Consequently, the tape is much more compact and has a lower cold-flow tendency as well as better recovery properties.
These characteristics allow a wide range of applications, regardless of the shape and the size of the seaing surface. The self-adhesive tape can be easily sticked to the flange. The used glue is suitable for applications in the food industry.  
KWO® CellFlon® white gasket tape is particularly suitable for demanding and very clean applications, for example in the food and beverage industry and in the pharmaceutical manufacturing sector. Further fields of application are ventilation systems and flue gas treatment plants.

The special “KWO® CellFlon® white CL” product is especially designed for the use in chlorine electrolysis cells and meets the requirements of all necessary certifications.


  • high thickness after installation
  • low widening
  • very good recovery properties
  • excellent adaptability to all surfaces
  • excellent sealing properties; full resistance
  • low diffusion leakage; good tightness performance in an oily environment
  • harmless in contact with food
  • 100 % expanded PTFE (ePTFE) without fillers
  • high mechanical properties
  • for demanding and pure apllications
  • UV resistant; no ageing
  • non-toxic, biologically inert
  • non-flammable


  • tube flanges
  • sealings for tanks
  • apparatus engineering
  • machine housing
  • compensators
  • chemical reactors
  • pumps
  • flue gas plants
  • food processing systems
  • proven by TA-Luft
  • compliant to FDA
  • EC1935/2004 - suitbale for applications with food contact (from April`15)
  • gasket characteristics pursuant to DIN EN 13555

Technical Data

RAW MATERIAL100 % expanded PTFE (ePTFE) without fillers - modified by CellFlon®-procedure
TEMPERATURE RANGErecommended temperature range: from -200°C to +160°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