Collet for tube couplings with head made of stronger material than rest of collet

摘要

A collet is disclosed for locking a tube in a tube coupling body is moulded in plastics and comprises an annular collar (11) having a plurality of arms (13) extending from the collar generally parallel to the collar axis. Each arm (13) has a head (15) at its distal end spaced from the collar for engaging between a tube and coupling body to lock the tube in the coupling body. Different materials are used for the heads (15) of the collet and the rest of the collet whereby the heads (15) are stronger and relatively rigid whereas the rest of the collet is relatively flexible.