Leader ClipperlonModified PTFE Gaskets
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Clipperlon 2135



Product Data Sheet


Steel and enamel flanges,   Heat exchanger, Plant / Containers, For high surface stress, For highly aggressive media,   For damaged sealing surfaces


The good resistance behaviour of the material leads to increased operating safety, even in changing operating conditions.

Chemical Compatiblity

Particularly for use with aggressive chemicals from pH 0 to 14 (except for molten alkali metals and elemental fluorine gas)

Delivery Options

Flange gaskets and sheets are available in thickness of 1/32",1/16", 1/8", 0,5mm, 1mm, 1,5mm, 2mm and 3mm. Other thicknesses available on request.. Standard gaskets can be supplied in accordance with ASME B16.21, EN12560-1 as well as EN1514-1. Non-standard or special gaskets can be manufactured according to customer drawings, or by given sizes or Edrawing.


Can be used from -240°C to approx. 270°C, depending on the installation and operating conditions


  • EC1935 (10/2011)
  • FDA 21 CFR 177.1550
  • TA-Luft


  • EC1935 (10/2011)
  • FDA 21 CFR 177.1550
  • TA-Luft

Sealing Characteristics

  • low leak rate
  • good electrical insulation properties
  • excellent sealability
  • non-ageing, good adaptability to surface irregularities
  • outstanding chemical resistance
Technical Data
max Temperature [°F]500
max Temperature [°C]270
density [g/cm3]0.9
Minimum initial stress [DIN E 2505 part 2] [N/mm2]26
Maximum initial stress [DIN E 2505 part 2] [N/mm2]160
Y- Value [psi]2800
ASTM F36 Recovery [% min]>12
Gasket required flange roughness [Ra micron]3,2-6,3
Gasket required flange roughness [RMS]125-250
max Seating stress [Qsmax bei RT EN13555] [n/mm2]160
Relaxation PQR (30 MPA 150°C) [%]0,78
Residual seating stress , [QA=40 MPA,Qmin(L 0,01), mg/(s*m)] bei RT 40 bar [N/mm2]5
compressability, [ASTM F36], [%]55
ASTM F36 Recovery [% min]>12
ASTM F38 Creep Relaxation [%]15
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