ASME B16.20 specifies the exterior work surface of each gasket shall bring the manufacturers' brand or recognition signature and gasket quantity prefixed by the characters R, RX, or BX, accompanied by the gasket substance id. Supplies will probably be known as demonstrated in Desk 2. The gasket shall even be noted by having an ASME B16.20 designation. The marking will be utilized so as to not harmfully distort the gasket or change the dependability of the close.