[ Shaft seals; single-acting and double-acting mechanical seals with gas or liquid lubrication for sealing liquid or gaseous media; box-type mechanical seals; mechanical seals with sealing fluid water seals; mechanical seals with rinse functions; mechanical seals with leak recovery mechanisms; mechanical seals with leak checking mechanisms; all the aforesaid goods being machine parts; ] mechanical apparatus and equipment for the storage, pressurization, circulation and/or tempering of fluids ...