Anti-rotation and axial locking arrangement of a gas seal on its sleeve

摘要

PCT No. PCT/GB96/00940 Sec. 371 Date Feb. 23, 1998 Sec. 102(e) Date Feb. 23, 1998 PCT Filed Apr. 22, 1996 PCT Pub. No. WO96/33358 PCT Pub. Date Oct. 24, 1996The present invention relates to a non-contact shaft seal (1) comprising a sealing element (14) mounted co-axially to a rotary sealing ring (10) to form a primary seal between opposed faces thereof to substantially prevent fluid flow across the primary seal. The sealing ring (10) is mounted about the shaft (2) on an inner sleeve (11). The inner sleeve is fixed to the shaft to be axially and rotationally fast. The sealing ring (10) is connected to the inner sleeve (11) by half-moon shaped locking members (12) extending through the inner sleeve (11) outwardly into the sealing ring (10). The locking members (12) lock the sealing (10) rotationally and axially fast on the inner sleeve (11).