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...Leak test handbook measuring testing practical use contents tightness basic principles procedures definition comparison influencing factors jw froehlich panels a solution to meet every need legal notice the part specifications phases tight or leaking is relative term requirement for component be always relates conditions at location where it used method level of pressurisation and allowable rate must established in accordance with these during manufacture this first doubts may arise parts individual internal combustion engines example watertight oiltight others not allow any fuel gas leakage as general rule should carried out on earliest possible stage within manufacturing process provide an indication whether will under subsequent operating dunk air leaks bubbles formed rise once they functional reach diameter mm if occurs seconds cm min can calculated assuming that passenger car tyre interior volume approx l such would cause pressure fall by bar years bubble rises corresponding above...