Grundfos A/s

Carsten H Pedersen

Helge Grann

Per Frost Vedsted

The ready-to-mount axial face seal comprises a rotating unit of a shaft protection sleeve pushable over the pump shaft with a longitudinal section projecting out of the housing of the pump and fastenable to this shaft, with a spring-loaded axial face seal ring surrounding the shaft protection housing and with an elastic sealing ring in the shaft protection sleeve as well as a stationary unit, surrounding the shaft protection sleeve, of a counter ring on which the axial face seal ring bears and of an assembly part for fastening the axial face seal on the pump housing. In relation to the diameter of the pump shaft the wall thickness of the shaft protection sleeve is smaller than with the known shaft protection sleeve. Furthermore the outer diameter of the axial face seal ring and of the counter ring in relation to the same diameter of the pump shaft is an associated standard diameter of an axial face seal without shaft protection sleeve. Such an axial face seal may be applied into a standardised mounting space which is envisaged for a standard axial face seal without shaft protection sleeve.

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Bjerringbro, Denmark

Carsten H Pedersen