Ring (fits above diaphragm)
Ring installs above diaphragm, into the pump head. Flat side goes into pump head, curved side go towards diaphragm. The old ring can be pried out using a small screwdriver. Note: Be sure not to scratch the paint pump block!
Fits with Diaphragm Part# 0278240 and often replaced at the same time.
Alternate Number Note: This 0270494 White Ring replaces the old 0047424 Black Ring; both rings are completely interchangeable.