Patent ID: 6921091

Claim:
A sealing boot for sealing a transmission joint connecting two shafts ( 4 , 6 ) comprising a boot body ( 10 ) having a bead ( 11 , 12 ) at each end for sealingly contacting the periphery of a shaft ( 4 ) or an element ( 7 ) of the joint integral with a shaft ( 6 ), each bead comprising: a radially outer shoulder ( 16 ) forming a transition between the bead ( 12 ) and the boot body ( 10 ) and adapted to form a stop for longitudinal positioning during mounting of a fixing element ( 22 ) for sealingly fixing the bead against the shaft ( 4 ) or the associated element ( 7 ), and a bearing surface ( 20 ) extending from the shoulder ( 16 ) without an increase in its external diameter as far as the end of the bead ( 11 , 12 ) and adapted to receive the fixing element ( 22 ), wherein the bearing surface ( 20 ) comprises a circular groove ( 26 ), and wherein the groove ( 26 ) is situated at a distance from the shoulder ( 16 ) substantially equal to the length of an internal surface of the fixing element ( 22 ) and is adapted to form a visual reference mark for longitudinal positioning during mounting of the fixing element ( 22 ).