Seal cartridge configured for providing a sealing between a rotatable shaft and a shaft casing, the seal cartridge having a hollow shape around a longitudinal axis, the seal cartridge comprising: - a set of sealing components configured for being removably assembled with each other so as to form the seal cartridge, wherein each of said sealing component is configured for being mounted annularly around the rotatable shaft; the seal cartridge being characterized in that at least one of said sealing components, called hereafter the first sealing component, is configured for being secured (or fixed) to another one of said sealing components, called hereafter the second sealing component, by means of a pin locking device, wherein the pin locking device is designed for locking a first sealing component of a seal cartridge together with a second sealing component of said seal cartridge, the pin locking device comprising: - a pin body comprising two parts arranged longitudinally one after the other along said longitudinal axis, namely a first part configured for fitting a pin cavity of the first sealing component and a second part configured for fitting a locking cavity of the second sealing component; - a spring configured for exerting a spring force against the pin body along said longitudinal axis, wherein said spring is configured for leaning, on one side, on a first contact surface of the pin cavity and for having its other side contacting a second contact surface, wherein the spring force is configured for moving the pin body from a withdrawn position, where the pin body is entirely located within the pin cavity, towards a locked position where said second part is located and maintained within the locking cavity while the first part remains located within said pin cavity, wherein the first sealing component comprises said pin cavity and the second sealing component comprises said locking cavity, characterised in that the pin body comprises a longitudinal bore extending along a longitudinal axis, wherein an inner wall of said bore comprises fixing means configured for cooperating with an extraction tool, and wherein said second contact surface is a surface of the pin body on which said bore opens out. - a set of sealing components configured for being removably assembled with each other so as to form the seal cartridge, wherein each of said sealing component is configured for being mounted annularly around the rotatable shaft; the seal cartridge being characterized in that at least one of said sealing components, called hereafter the first sealing component, is configured for being secured (or fixed) to another one of said sealing components, called hereafter the second sealing component, by means of a pin locking device, wherein the pin locking device is designed for locking a first sealing component of a seal cartridge together with a second sealing component of said seal cartridge, the pin locking device comprising: - a pin body comprising two parts arranged longitudinally one after the other along said longitudinal axis, namely a first part configured for fitting a pin cavity of the first sealing component and a second part configured for fitting a locking cavity of the second sealing component; - a spring configured for exerting a spring force against the pin body along said longitudinal axis, wherein said spring is configured for leaning, on one side, on a first contact surface of the pin cavity and for having its other side contacting a second contact surface, wherein the spring force is configured for moving the pin body from a withdrawn position, where the pin body is entirely located within the pin cavity, towards a locked position where said second part is located and maintained within the locking cavity while the first part remains located within said pin cavity, - a pin body comprising two parts arranged longitudinally one after the other along said longitudinal axis, namely a first part configured for fitting a pin cavity of the first sealing component and a second part configured for fitting a locking cavity of the second sealing component; - a spring configured for exerting a spring force against the pin body along said longitudinal axis, wherein said spring is configured for leaning, on one side, on a first contact surface of the pin cavity and for having its other side contacting a second contact surface, wherein the spring force is configured for moving the pin body from a withdrawn position, where the pin body is entirely located within the pin cavity, towards a locked position where said second part is located and maintained within the locking cavity while the first part remains located within said pin cavity, wherein the first sealing component comprises said pin cavity and the second sealing component comprises said locking cavity, characterised in that the pin body comprises a longitudinal bore extending along a longitudinal axis, wherein an inner wall of said bore comprises fixing means configured for cooperating with an extraction tool, and wherein said second contact surface is a surface of the pin body on which said bore opens out.