The hardness testing of the gaskets made of metal materials, is done using Brinell’s (HB) method (HB) according to EN ISO 6506, Vickers’ (HV) according to EN ISO 6507 or Rockwell’s (HRB, HRC) according to EN ISO 6508. If the hardness value conversion is necessary according to the above methods, the value conversion is performed in line with EN ISO 18265. Other methods or specific testing requirements to be discussed.

In case of soft materials, Shore’s method is normally used in line with EN ISO 868.