It Is Necessary to Abrogate All the International Basic Standards of Seals

According to definitions in the international standard JCGM 200, physical quantities, divided into base quantity and derived quantity, are a property of a phenomenon, body, or substance, where the property has a magnitude that can be expressed as a number and a reference (a measurement unit); a base quantity cannot be expressed in terms of the others, and a derived quantity can be defined in terms of the base quantities of its system; and these base and derived quantities are related to each other by some laws and their equations. In the International System of Quantities, tightness or leak resistance is a derived quantity defined by a sealing or leaking law, which is the product of pressure p and time t expended on leaking a unit cubage of fluid through the sealing joints of a pressure vessel or system at a constant pressure, but by no means the reciprocal of “leakage rate” fabricated by the international standards. Various fluid circuits in pipes, on objects and in joints differ only in their fluid (leak) resistance and reactance, and it is impossible to know how to identify and control a fluid circuit before knowing these physical quantities. All the international basic standards of seals should be abrogated as soon as possible because they were so enacted before knowing what the leak resistance (tightness) and the qualified seal are and how to design, install and inspect a seal that it is impossible to count on them providing any effective control of leakage for a pressure vessel or system.