A cylindrical shaft seal packaging sleeve that is inserted in a shaft seal an inner peripheral surface of which slidably contacts with a rotation shaft includes an insertion end portion that is inserted in the shaft seal and a mounting end portion having a larger outer diameter than that of the insertion end portion, a chamfered portion is formed in each of the insertion end portion and the mounting end portion and a step portion having a larger outer diameter than that of the chamfered portion is provided in an axial deeper side than the chamfered portion, and a minimum diameter of the step portion in the insertion end portion is smaller than a minimum diameter of the shaft seal.

A cylindrical shaft seal packaging sleeve that is inserted in a shaft seal an inner peripheral surface of which slidably contacts with a rotation shaft includes an insertion end portion that is inserted in the shaft seal and a mounting end portion having a larger outer diameter than that of the insertion end portion, a chamfered portion is formed in each of the insertion end portion and the mounting end portion and a step portion having a larger outer diameter than that of the chamfered portion is provided in an axial deeper side than the chamfered portion, and a minimum diameter of the step portion in the insertion end portion is smaller than a minimum diameter of the shaft seal.

A locking ring for use in a seal assembly and a seal assembly having a locking ring. The locking ring can be manufactured by metal injection molding (MIM) for reduced elastic modulus, as a result of increased grain size in the microstructure, and reduced locking ring installation force. Optionally, the locking can include a through cut to decrease the overall hoop stress of the locking ring, which can be made from a MIM-produced bulk stock or from a metal stock.

A locking ring for use in a seal assembly and a seal assembly having a locking ring. The locking ring can be manufactured by metal injection molding (MIM) for reduced elastic modulus, as a result of increased grain size in the microstructure, and reduced locking ring installation force. Optionally, the locking can include a through cut to decrease the overall hoop stress of the locking ring, which can be made from a MIM-produced bulk stock or from a metal stock.

The present invention provides a shaft-cylinder assembly for high-temperature operation comprising a pair of first and second dynamic sealing members having a helical coiled seal ring structure configured to be in contact with the shaft for providing dynamic sealing function in the cylinder; and a cylindrical cooling jacket configured to circumferentially surround the dynamic sealing members such that a cavity is defined between the dynamic sealing members inside the cooling jacket; wherein the cooling jacket comprises one or more inflow cooling channels and one or more outflow cooling channels configured to communicating with the cavity and circulating a cooling fluid through the cavity for moving heat away from the dynamic sealing members.

A contamination guard for a machine is disclosed herein. The contamination guard includes an inner ring, a first annulus, a second annulus, and an impeller. The impeller is configured to promote intake of nearby air with contamination. The first annulus and second annulus form a passage that is configured to sling away air with contamination during operation of the machine.

A contamination guard for a machine is disclosed herein. The contamination guard includes an inner ring, a first annulus, a second annulus, and an impeller. The impeller is configured to promote intake of nearby air with contamination. The first annulus and second annulus form a passage that is configured to sling away air with contamination during operation of the machine.

A seal assembly has a first component retained by a retaining member abutting a second component, the first component having a retaining member, the retaining member having a plurality of tabs, the plurality of tabs extending outwardly to engage a surface of the second component, thereby preventing withdrawal of the first component from the second component.

A seal assembly has a first component retained by a retaining member abutting a second component, the first component having a retaining member, the retaining member having a plurality of tabs, the plurality of tabs extending outwardly to engage a surface of the second component, thereby preventing withdrawal of the first component from the second component.

A cover for a bearing housing, in particular intended to be mounted on machinery for the food industry, provided with an end wall transverse to an axis of the bearing housing; with an annular side wall which extends transversely with respect to the end wall; and with an engaging portion towards the bearing housing, which is formed on one end of the side wall opposite to the end wall; a through-opening being formed through the end wall so as to allow the passage of a moving shaft, preferably a rotating shaft, and being surrounded by a reinforcing ring rigidly joined to and integral with the end wall so as to support a sealing element mounted on the through-opening and sealingly engaged by the moving shaft.