Abstract:
A non-collapsible flexible sealing membrane (or bellows) (100) for incorporation in a mechanical seal assembly and use in rotary shaft equipment. The sealing membrane includes a substantially radially outward extending first flange portion (102), which can be urged into an axially shiftable ring (36) by a biasing mechanism (500). The sealing membrane further includes a substantially axially outboard extending second coaxial portion (104), substantially radially inward of the balance diameter of the seal. The coaxial portion is advantageously held fixed to a stub sleeve (200) by an annular band (300). The angle between the flange portion and the coaxial portion of sealing membrane enables directional control of the forces acting on stub sleeve and first ring.
Abstract:
The invention relates to a sealing ring (1) for sealing a piston rod comprising a retaining ring (2) having a circular inside diameter (M1) and a center axis (M) and comprising a plurality of sealing segments (3), which are supported in the retaining ring (2) in such a way that the sealing segments can be moved in a direction radial to the center axis (M), wherein each sealing segment (3) has a sealing surface (3a) that is oriented toward the center axis (M) and that extends in a curved manner in a circumferential direction (U) with respect to the center axis (M), and wherein each sealing segment (3) has two lateral sealing-segment guiding surfaces (3b) extending parallel to each other, wherein the sealing surface (3a) ends at one of the two sealing-segment guiding surfaces (3b) at both ends, and wherein the retaining ring (2) comprises a plurality of guiding segments (2a) arranged at a distance from each other in the circumferential direction (U), wherein each two guiding segments (2a) following each other in the circumferential direction (U) have guiding surfaces (2b, 2c) that face each other and that extend parallel to each other, said guiding surfaces being arranged at a distance from each other in such a way and being designed in such a way that, by means of the sealing-segment guiding surfaces (3b) of the sealing segment, the sealing segment (3) is guided on the two lateral guiding surfaces (2b, 2c) and is supported on the two lateral guiding surfaces in such a way that the sealing segment can be moved in the radial direction (R), wherein guiding segments (2a) and sealing segments (3) are arranged in succession in the circumferential direction (U).
Abstract:
A method of manufacturing bearing seal for use in a roller bearing is provided. A steel coil of a preselected width is fed into a ring rolling machine to form a closed coil ring. The closed coil ring is then welded along the butted joint. The welded closed coil ring is then fed to a series of pre-forming machines wherein the desired profiles of the final bearing seal are formed.
Abstract:
A stuffing box casing (22) for a cylinder (10) of a reciprocating compressor comprises a first outer disc (28) and a second inner disc (30), concentric with respect to the outer disc (28) and therewithin a seat for at least a piston (10) sealing element is formed. At least a part of the stuffing box casing (22) is made of a high strength metal alloy material, prepared by a process comprising a melting step, a following plastic deforming step and a final thermal processing step for improving the stuffing box casing (22) mechanical properties.
Abstract:
A sealing system for a container (2) containing a fluid at high pressure, comprising a head (10) moving between a closed position and an open position of the container (2), a piston (12) for the pressurisation of the container (2) mounted to slide within the head (10) and sealing means adapted to prevent fluid from emerging from the pressurised container (2). These sealing means comprise an auxiliary cover (22) adapted to be interposed between the head (10) and the container (2), provided with an opening (24) in which the piston (12) may slide and a coinable gasket (28) associated with the opening (24) adapted after its coining to exert a sliding seal between the piston (12) and the cover (22).
Abstract:
A sealing system for a container (2) containing a fluid at high pressure, comprising a head (10) moving between a closed position and an open position of the container (2), a piston (12) for the pressurisation of the container (2) mounted to slide within the head (10) and sealing means adapted to prevent fluid from emerging from the pressurised container (2). These sealing means comprise an auxiliary cover (22) adapted to be interposed between the head (10) and the container (2), provided with an opening (24) in which the piston (12) may slide and a coinable gasket (28) associated with the opening (24) adapted after its coining to exert a sliding seal between the piston (12) and the cover (22).