this retaining clip below will work, but it is a PITA to get it into the opening of the pump and into the groove. Lowes has this retaining ring. part number 138793 1 5/8 Hillman, not stainless, but only 1.27 for 2 of them.
i might recommend trying the 1 1/2 size over this 1 5/8, it was that much of a PITA to get in, but i got it in. i had to do some SERIOUS squeezing together.
part is HO-162SS is the one below
Part number for Lowes is 138793
retaining ring Attach file:
(66.96 KB) (38.00 KB) (74.99 KB)
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