(Currently Amended) A cartridge seal for a pump having a shaft that rotates about a shaft axis and is supported by a bearing assembly that is axially movable with said shaft for adjusting an impeller position, said cartridge seal comprising: a shaft sleeve which extends axially to define inboard and outboard sleeve ends that respectively define opposite first and second end faces which face axially, said shaft sleeve having an inner sleeve surface facing radially inwardly for close fitting on an outer shaft surface of the shaft; a cylindrical gland which fits over said shaft sleeve in surrounding relation therewith and defines a radial space between said gland and said shaft sleeve, said gland having an inboard gland end and outboard gland end defining opposite ends of said radial space wherein said outboard gland end has a first setting member engagable between said gland and said shaft sleeve to radially and axially locate said gland relative to said shaft sleeve so that said shaft sleeve and said gland are joinable together prior to mounting on said shaft, said gland having outer and inner gland surfaces which face in radially opposite directions wherein said inner gland surface faces toward said shaft sleeve to define said radial space, second setting members being removably mounted to said inboard ends of said gland and said shaft sleeve, said second setting members maintaining fixed radial separation between said inner gland surface relative to said shaft sleeve; at least an opposed pair of first and second seal rings (57/56) defining opposing seal faces, said first seal ring being supported on said shaft sleeve within said radial space so as to rotate with said shaft sleeve and the shaft, and said second seal ring being stationarily supported on said gland in said radial space so that said first and second seal rings (57/56) are relatively rotatable during shaft rotation; and an adapter ring mountable on the pump and removably mounted on said gland wherein said adapter ring has ring fasteners to stationarily mount said adapter ring to the pump, said adapter ring being disposed about the outer gland surface and having a static seal gasket which is disposed in sealing contact with said outer gland surface and permits axial sliding of said outer gland surface along said static seal gasket, such that said gland, said shaft sleeve and said seal rings (57/56) are axially movable together with the shaft while said outer gland surface remains in sealing contact with said static seal gasket during said sliding. a shaft sleeve which extends axially to define inboard and outboard sleeve ends that respectively define opposite first and second end faces which face axially, said shaft sleeve having an inner sleeve surface facing radially inwardly for close fitting on an outer shaft surface of the shaft; a cylindrical gland which fits over said shaft sleeve in surrounding relation therewith and defines a radial space between said gland and said shaft sleeve, said gland having an inboard gland end and outboard gland end defining opposite ends of said radial space wherein said outboard gland end has a first setting member engagable between said gland and said shaft sleeve to radially and axially locate said gland relative to said shaft sleeve so that said shaft sleeve and said gland are joinable together prior to mounting on said shaft, said gland having outer and inner gland surfaces which face in radially opposite directions wherein said inner gland surface faces toward said shaft sleeve to define said radial space, second setting members being removably mounted to said inboard ends of said gland and said shaft sleeve, said second setting members maintaining fixed radial separation between said inner gland surface relative to said shaft sleeve; at least an opposed pair of first and second seal rings (57/56) defining opposing seal faces, said first seal ring being supported on said shaft sleeve within said radial space so as to rotate with said shaft sleeve and the shaft, and said second seal ring being stationarily supported on said gland in said radial space so that said first and second seal rings (57/56) are relatively rotatable during shaft rotation; and an adapter ring mountable on the pump and removably mounted on said gland wherein said adapter ring has ring fasteners to stationarily mount said adapter ring to the pump, said adapter ring being disposed about the outer gland surface and having a static seal gasket which is disposed in sealing contact with said outer gland surface and permits axial sliding of said outer gland surface along said static seal gasket, such that said gland, said shaft sleeve and said seal rings (57/56) are axially movable together with the shaft while said outer gland surface remains in sealing contact with said static seal gasket during said sliding.