part 18175 O-Ring, Spacer, Inner Cat Pumps code 18175 Details Cat Pumps number18175 DescriptionO-Ring, Spacer, Inner Qty per pump3 or 18175 Also comes in 34091 Seal kit, NBR (STD)702349 Seal kit, NBR (STD) Fits these pumps Cat Pumps 60 Frame 6 674767606761676267676775