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EN 13555

1. Creep & Relaxation test - determination of the characteristic PQR (ΔeGc) value

  • at ambient temperature RT
  • at elevated temperature T (up to 850 °C)
  • max available surface pressure load – 2000kN

2. Compression tests - determination of the characteristics QSmax and EG values

  • at ambient temperature RT
  • at elevated temperature T (up to 850 °C)
  • max available surface pressure load – 2000kN

3. Leakage tests - determination of the characteristics Qmin/L and QSmin/L values

  • at ambient temperature
  • at elevated temperature temperature T (up to 500 °C)
  • max available surface pressure load – 2000kN
  • internal pressure level 0 – 160bar
  • chart diagrams for minimum required gasket stress at assembly (Qmin/L) and work (QSmin/L) conditions
  • min leakage level detection possible by helium spectrometer: 5*10-12 mbar/(l*s),

4. Friction test - determination of friction factor µG

  • at ambient temperature
  • at elevated temperature temperature T (up to 500 °C)

Typical gasket characteristics for single gasket material:

  • Creep relaxations tests at three different stress levels and three temperatures,
  • Compression tests at ambient and two elevated temperatures
  • Leakage test at single pressure level,
  • Test report

EN 61340-2-3

Determination of resistance and resistivity of sealing materials predesignated for selection of gaskets to operate in environments specified by the ATEX directive.

EN ISO 15848-1

Leakage test with usage of helium spectrometer and additional leak detector (sniffer).

Test based on ISO 15848-1 for on-off valves (CO1) Sample test run:

  • Assembly of the valve in the test rig
  • (1) Preliminary test at RT: Leakage measurement at the valve stem and the body seal
  • (2) 125 mechanical cycles at RT, leakage measurement at the valve stem
  • (3) Adjust test temperature, leakage measurement at the valve stem
  • (4) 125 mechanical cycles at test temperature, leakage measurement at the valve stem
  • (5) Cooling down to RT, leakage measurement at the valve stem
  • Repeat steps (2) to (4)
  • (6) Cooling down to RT, leakage measurement at the valve stem and the body seal