• Economical alternative when service conditions are moderate
  • Suitable for a wide range of applications in the chemical industries
  • Excellent chemical resistance in strongly acidic applications
  • FDA compatible
  • Holds shape for thermal cycles

See graphs for temperature & pressure limits

Ref. Thickness of Measured Values

1.5 mm


2.2 g/cm³

Compressibility ASTM F36


Recovery ASTM F36


Stress Relaxation

DIN 52913, 16h 4,350 psi, 300°F


25 MPa

Klinger Hot Compression Test

75°F/7,250 psi

480°F/7,250 psi





DIN 3535/6

DIN 28090-2


0.2 ml/min

0.02 mg/sm

Thickness/Weight Increase

H₂SO₄,100%: 18h/75°F

HNO₃,100%: 18h/75°F





KTW proposal

DIN-DVGW permit

FDA conformity

TA-Luft certification

Germanischer Lloyd

Pressure & Temperature Graphs

The pressure/temperature graphs shown are the most current method of determining the suitability of a gasket material in a known environment. Use the pressure and temperature graphs to select the most suitable material for your application.

  • 1. In area one, the gasket material is suitable using common installation practices subject to chemical compatibility.
  • 2. In area two, appropriate measures are necessary for installation of the gasket to ensure maximum performance. Please call or refer to the KLINGER® expert software system for assistance.
  • 3. In area three, do not install gaskets in these applications without first referring to the KLINGER® expert software system or contacting Thermoseal Inc.'s technical support service

These graphs were developed from testing Klinger materials. Do not use them for competitors' materials since non-asbestos gasketing materials do not have service equivalents.

Use: The limitations of use, as shown in the graphs, are for guidance only, and are based on 1/16" thick material. The limitations of use decrease significantly as gasket thickness increases. Do not use a thicker gasket material or "double gaskets" to solve a gasket problem without first consulting the manufacturer. The ability of a gasket material to make and maintain a seal depends not only on the quality of the gasket material, but also on medium being sealed, the flange design, the amount of pressure applied to the gasket by the bolts and how the gasket is assembled into the flanges and tightened. Thermoseal engineers can advise on gasket selection and installation based on specified operating conditions. If you are in any doubt, fax us at 937.498.4911 or phone us at 937.498.2222.

For Additional Information Call Toll Free 1.800.990.7325 or email This email address is being protected from spambots. You need JavaScript enabled to view it.