refers to the medical liquid conduction assembly, includes connector (11) for releasing, retaining part (2) pluggable to connector (11) and attachable to the fluid delivery device (5) and opening (210) engaging with the portion (2) attached to connector (11), and member (4) to seal the transition between connector (11), (12) and part (2), wherein member (4) may be inserted into opening (210) ) of part (2) towards insertion (e) so as to be retained. the element (4) has sealing head (40) which seals the opening (210) of the part (2) attached to the connector (11) and body (42) connected to the available head (40) in the opening (210) radially to the part 2). The inner space of the element (4) has a point that supports the opening of the head (40). the element (4) in the transition between the head (40) and the body (42) has shoulder (410) arranged radially with respect to the insertion direction (e) via contact surface (212) and insertion direction (e) into the opening (210) held between part (2) and connector (11) so that flange (420) abuts its lower (422) and upper (421) sides via contact surface (114) of connector (11) ) and engage base section (43) by part (2) fixed to recess (11) in recess (113) on connector (11). In this way, a connection assembly for conducting medical liquid makes it possible to securely lock the sealing member between the connector and the fastening part.refere-se a montagem para conduzir líquido médico, inclui conector (11) para liberar, parte de fixação (2) conectável ao conector (11) e fixável a dispositivo (5) de liberação do líquido e abertura (210) engatável com a parte (2) fixada ao conector (11), e elemento (4) para vedar a transição entre o conector (11), (12) e a parte (2), em que o elemento (4) pode ser inserido na abertura (210) da parte (2) em direção de inserção (e) de modo a ser retido. o elemento (4) possui cabeçote de vedação (40) que veda a abertura (210)da parte(2) fixada ao conector (11) e corpo (42) conectado ao cabeçote
