BUSH FOR PARTITION-THROUGH-PIPE SEAL AND MULTI-STAGE FLASH EVAPORATOR USING THE BUSH

摘要

A sealing bush for a tube inserted through a hole in a partition is made of Teflon and comprises a cylindrical body 21 having an inner periphery with a diameter greater than the outside diameter of the tube 5a, an outer periphery with a diameter smaller than the diameter of the hole 7a and a front-to-rear length greater than the depth of the hole 7a, an inner seal portion 22 fittable around the tube 5a in intimate contact therewith, an outer seal portion 23 fittable to an inner peripheral surface of the partition defining the hole 7a in intimate contact with the surface, an engaging portion 24 forcibly movable through the hole 7a and engageable with a front edge of the hole-defining inner peripheral surface of the partition after being moved through the hole for preventing the bush from reversely slipping out of the hole, and a retaining portion 25 movable into contact with a rear edge of the hole-defining inner peripheral surface of the partition after the engaging portion 24 is forcibly moved through the hole 7a for preventing the bush from moving through the hole. <IMAGE>