An assembly includes a first tube. The first tube includes a first end configured to receive a second tube. The second tube includes a first end configured to slidably translate into the first end of the first tube and to receive an insert. The insert is configured to be disposed within a first portion of the second tube that is near the first end of the second tube. The first tube, the second tube, and the insert form a seal. The coefficient of thermal expansion (CTE) of the first tube is similar to the CTE of the insert and different from the CTE of the second tube.

A hose with a metal fitting includes a hose, a metal fitting connected to an end portion of the hose, and a sleeve covering at least a portion of the hose and metal fitting. The inside of the hose communicates with the inside of the metal fitting. The hose includes an inner-surface resin layer, a metal-wire reinforced layer, and an outer-surface resin layer. The sleeve includes a first cylindrical portion covering a portion of the metal fitting and a second cylindrical portion directly covering a portion of the hose. The length of the second cylindrical portion is 8 mm or more. The thickness of the second cylindrical portion is 1 mm or more. The hardness of the second cylindrical portion is measured in compliance with JISK6253 by Durometer Type A and is between 70 and 95. The material of the sleeve and the outer-surface resin layer are the same.