Grundfos 96509609 O-Ring Kit CR(I, N) 10 To 20 NSFS is a replacement set of O-rings designed for Grundfos CR(I) and CR(N) pump configurations in the 10 to 20 NSFS range. It provides the O-rings needed to reseal the pump during service and help prevent leaks in CR(I,N) models. The part is identified by 96509609 and is intended specifically for CR(I,N) pumps within the 10–20 NSFS range.
