DICHTUNG FUER EINE HECKSCHRAUBENWELLE

摘要

Disclosed is a propeller shaft seal device 1 where in an annular case member comprising units 5, 6, 7, 8 is arranged on the outer periphery of a shaft 2, a plurality of seal members 12, 17, 20 are disposed in annular gaps formed between the shaft and the case member to form a multiple stage seal against sea water A and lubricating oil B, and pressure fluid is fed through line 27 into the seal portion so as to enhance the sealing effect by pressure of the fluid on seal member 12 and lip seal 17. Seal members 12 in Fig. 1 are segment seal members, but a hollow rubber ring could be used instead, Fig. 5 (not shown). Several embodiments are described.