This Seal Set is used ONLY in Seal SWIM56-15 or WUA 500 Wet Ends. It is 1 39/64" Across the back of the Spring Seal part that goes into the volute or wetend back and the Ceramic & Rubber part that goes into the impeller is 1 11/32". The Hole in the ceramic part is about 3/4" and the hole in the spring side measures about 45/64".
For the other parts for this wet end Click the links below:
