7
Shaft seals, bearing housings, headwheels and cable pulleys, crank shafts, Single and double mechanical seals with gas or liquid lubrication for sealing liquid or gaseous media, Cassette-type mechanical seals, Mechanical seals with confining fluid seals, Mechanical seals with a flushing function, Mechanical seals with leakage recirculation, Mechanical seals with leakage control, All the aforesaid goods being parts of machines; Mechanical apparatus and equipment for the storage, pressurisation, circulation and/or tempering of fluids used in mechanical seals, mechanical apparatus and equipment, namely buffer pressure units, fluid refill units, fluid circulation units, separators for impurities, apparatus and equipment for collecting leakages, gas supply devices (parts of machines) for mechanical seals with gas lubrication
17
Packing and stopping materials, including mechanical seals of all kinds, in particular mechanical seals, sealing rings, lip seals, gap seals, labyrinth seals, gland seals, seals for rotary kilns
37
Installation and maintenance of mechanical seals