Grundfos S Range 50 replacement mechanical seal complete upper & Lower P# YJ3458332 - YJ3457838  to suit Frame 50 pumps 
This seal is an aftermarket direct replacement for the OEM version and suits various Grundfos size end standard pumps.

This seal fits the following pump sizes:
  • SV.80.80.74.2.50H / SV.80.80.94.2.50H
  • SV.80.80.120.2.50H 
  • S1.80.100.75.4.50S / S1.80.100.55.4.50H
  • S1.80.100.75.4.50H / S1.80.100.100.4.50H
  • S1.80.100.125.4.50H / S1.80.200.75.4.50E
  • S1080.200.100.4.50E / S1.80.200.125.4.50E
  • S1.80.100.100.55.4.50M / S1.100.100.75.4.50M
  • S1.100.100.100.4.50M / S1.100.100.125.4.50M
  • S1.100.125.75.4.50L / S1.100.125.100.4.50L
  • S1.100.125.125.4.50L