For the TA Luft1 test, the seal is installed in a DN40/PN40 steel flange, usually with a gasket stress of 30 MPa. The flange is then exposed to a defined temperature for minimum 48 hours. After cool down, leakage rate is measured over a period of at least 24 hours. The test pressure is 1 bar helium.
The ultimate final leakage rate after a test duration of 24 hours must remain below 10-4 mbar*l/(s*m) for the seal to qualify according to TA Luft.
TA Luft certificates are available for thicknesses 3mm and 6mm.
1 Federal Ministry of Germany for the Environment, Nature Conservation, Building and Nuclear Safety: First General Administrative Regulation Pertaining the Federal Emission Control Act (Technical Instructions on Air Quality Control - TA Luft), Joint Ministerial Gazette, July 30, 2012.
The Federal Institute for Materials Research and Testing (BAM) tests the sealing material compatibility for use in flanged connections with liquid and gaseous oxygen. Further information on the test procedure and the result can be found in the following test report.
Eurochlor's publication on Experience of Gaskets in Liquid Chlorine and Dry or Wet Chlorine Gas Service and the Chlorine Institute's Pamphlet 95 Gaskets for Chlorine Service cover gaskets for both dry and wet chlorine service and highlight materials that have found user acceptance through field-testing and member company experience. GORE® GR Sheet Gasketing and GORE Universal Pipe Gasket (Style 800) are both listed in these publications. The documents are available from the respective organizations.
The DVGW (Deutscher Verein des Gas- und Wasserfaches e.V.) is the German Technical and Scientific Association for Gas and Water. It tests sealing materials according to the DIN 3535-6 norm Gaskets for gas supply - Part 6: Gasket materials based on fibres, graphite or polytetrafluoroethylene (PTFE) for gas valves, gas appliances and gas mains. GORE Universal Pipe Gasket (Style 800) fulfills all requirements of this norm and is therefore suitable for natural gas applications.
GORE Universal Pipe Gasket (Style 800) has received a Product Design Assessment (PDA) Certificate per the ABS Type Approval Program.
This test analyzes leachable water-soluble fluoride and chloride ions which can induce flange corrosion. The samples are leached for 24 hours at approximately 95°C in demineralized water. Contact Gore for further information if this testing is required for your application.
GORE® Gasketing products meet the definition of an article; therefore, a Material Safety Data Sheet (MSDS) or Safety Data Sheet (SDS) is not required. However, for your convenience, a Product Safety Sheet, which details the intended use and proper handling of our articles, is provided.
The Gore Sealant Technologies Quality Management System is certified in accordance with ISO 9001.