Patent ID: 8899295

Claim:
An ultrasonic oscillating unit comprising a converter and a sonotrode ( 1 ) optionally connected to the converter by way of an amplitude transformer ( 2 ), wherein the sonotrode ( 1 ) has a sealing surface ( 10 ) which is substantially in the form of a circular ring or a cylinder surface and the ultrasonic oscillating unit has a holder ( 3 ) for fastening the ultrasonic osciliating unit to a machine stand, characterised in that the holder ( 3 ) is fastened directly to the sonotrode ( 1 ), characterised in that the holder ( 3 ) is additionally fastened to the amplitude transformer ( 2 ) or the converter, and characterised in that both the sonotrode ( 1 ) and also the amplitude transformer ( 2 ) or converter have an abutment and the holder ( 3 ) has a sleeve which bears both against the abutment of the sonotrode ( 1 ) and also the abutment of the a amplitude transformer ( 2 ) or the converter.