Abstract: A sealing assembly for extending around a rotating shaft for preventing the transmission of fluids along the shaft, in which a sealing element is biased towards the rotary sealing part; and a pusher sleeve extends between the sealing element and a housing.

Abstract: A shaft seal in which a rotary sealing part is mounted coaxially with the sealing element and forms therewith a contactless primary seal between opposed faces of the sealing element and rotary sealing part to substantially prevent fluid flow across the primary seal from a high pressure radial side to a low-pressure radial side. An auxiliary sleeve forms a small gap between it and a seal housing and maintains the gap despite the presence of relatively high pressure at the high pressure radial side.

Abstract: A shaft seal in which a rotary dealing part is mounted coaxially with a sealing element and forms therewith a primary seal between opposed faces of the sealing element and the rotary sealing part to substantially prevent fluid flow across the primary seal from a high pressure radial side to a low-pressure radial side. Secondary and tertiary seals are also provided between the high-pressure and low-pressure radial sides; and between an auxiliary sleeve and the seal housing, respectively.

Abstract: A shaft seal is disclosed comprising a sealing element (2), a rotary sealing part (4) mounted coaxially with the sealing element and forming therewith a contactless primary seal between opposed faces of the sealing element (2) and rotary sealing part (4) to substantially prevent fluid flow across the primary seal from a high-pressure radial side to a low-pressure radial side, a seal housing (8), a pusher sleeve (9) disposed, between the seal housing and the sealing element, coaxially with and in contact with the sealing element (2), biasing means (10) urging the pusher sleeve (9) away from the seal housing (8) and against the sealing element (2) to urge the sealing element axially towards the rotary sealing member (14), and a first sealing member (12) disposed about the pusher sleeve (9) and located, in a channel (14), in communication with the high-pressure radial side to provide a secondary seal for the pusher sleeve (9) between the high-pressure and low-pressure radial sides.

Abstract: A shaft seal comprising a sealing element (2), rotary sealing part (4) mounted coaxially with the sealing element and forming therewith a contactless primary seal between opposed faces of the sealing element (2) and rotary sealing part (4) to substantially prevent fluid flow across the primary seal from a high pressure radial side to a low-pressure radial side, a seal housing (8), an annular pusher disc (9) disposed about a forwardly extending sleeve portion (8a) of the seal housing and coaxially with the sealing element (2), biasing means (10) acting on the pusher disc (9) to urge the sealing element axially towards the rotary sealing part (4), and a first sealing member (12″) disposed between the pusher disc (9) and the forwardly extending sleeve portion (8a) in communication with the high-pressure radial side to provide a secondary seal between the high-pressure and low-pressure radial sides.

Abstract: A shaft seal is disclosed comprising a sealing element (2), a rotary sealing part (4) mounted coaxially with the sealing element and forming therewith a contactless primary seal between opposed faces of the sealing element (2) and rotary sealing part (4) to substantially prevent fluid flow across the primary seal from a high-pressure radial side to a low-pressure radial side, a seal housing (8), a pusher sleeve (9) disposed, between the seal housing and the sealing element, coaxially with and in contact with the sealing element (2), biasing means (10) urging the pusher sleeve (9) away from the seal housing (8) and against the sealing element (2) to urge the sealing element axially towards the rotary sealing member (14), and a first sealing member (12) disposed about the pusher sleeve (9) and located, in a channel (14), in communication with the high-pressure radial side to provide a secondary seal for the pusher sleeve (9) between the high-pressure and low-pressure radial sides.

Abstract: The present invention relates to a 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 element (14) is urged axially towards the rotary ring (10) by a springs (15) acting between a pusher sleeve (15) connected to the sealing element 14 and a seal housing (19). A secondary seal formed between the pusher sleeve (15) and the housing (19) by a sealing member (20) located in a channel (21) in the pusher sleeve (15).

Abstract: The present invention relates to a 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 element (14) is urged axially towards the rotary ring (10) by a springs (15) acting between a pusher sleeve (15) connected to the sealing element 14 and a seal housing (19). A secondary seal formed between the pusher sleeve (15) and the housing (19) by a sealing member (20) located in a channel (21) in the pusher sleeve (15).

Abstract: The present invention relates to a 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 element (14) is urged axially towards the rotary ring (10) by a springs (15) acting between a pusher sleeve (17) connected to the sealing element 14 and a seal housing (19). A secondary seal formed between the pusher sleeve (17) and the housing (19) by a sealing member (20) located in a channel (21) in the pusher sleeve (17).

Abstract: The 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).