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; Slide rings; All the aforesaid goods being parts of machines.;