A leak test is carried out to detect weak points and to improve product design. The test is carried out by
applying high pressure to determine whether there is a pressure decrease caused by an unexpected
crack or hole. In order to meet safety and quality criteria, leak testing is frequently performed prior to
the distribution of goods. Although the majority of leak testing are harmful

Although most leak tests are destructive tests, there are also types of leak tests which are not leading to out of use parts:

• Test on leaks of repaired parts
• Check of leak tightness on connections
• Check of seal alignment