Valve spool seal with one-piece housing ring having an arcuate side wall and a stepped side wall

摘要

An annular sealing unit for multiway valves. It comprises an integral housing ring, wherein an elastic sealing element is arranged. The housing ring possesses a cylindrical holding wall for attachment in a recess in the valve housing with a press fit. Furthermore it possesses two side walls projecting radially inward. The one side wall has an arcuate form and the other one is stepped. The stepped design means that there is a satisfactory engagement face for fitting the sealing unit. The arcuate shape of the first side wall prevents any skewing during pressing home during fitting in place. Furthermore a method for the manufacture of the sealing unit is provided, wherein the housing ring is manufactured by forming of the material without machining.