Distribution pump for fluid product comprises pump housing and piston having upper sealing lip comprising first and second lip sections sealing housing and stop ferrule in piston rest position

摘要

The distribution pump comprises a pump housing (10) and a piston (50) comprising an upper sealing lip (52). The pump comprises a stop ferrule (80) on the housing upper edge which cooperates with the piston to define a piston rest position. The piston upper lip comprises a first lip section (53) sealing the housing and a second lip section (54) sealing against the ferrule in the rest position. An Independent claim is included for a fluid distribution device comprising the pump.