"RDS446309" . "EPISTLE Rota 2001" . "1998.11.23" . "MECHANICAL SEAL" . . "MECHANICAL SEAL" . "u20683" . "696900" . "A seal that comprises of a set of one or more rotating and stationary seal faces, together with auxiliary hardware, separated by a film of fluid intended to reduce flow loss around a rotating shaft to an acceptable level." . "Recorded" .