You are buying a PS-1000 Seal only. This Seal is used Primarily in Waterway Brand Wet Ends. It is 1 3/8" 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 1/4". The Hole in both parts is about 5/8". Note: This Seal Fits Waterway Executive, Hi-Flo, Spa Flo, Iron Might, 1 1/2" Center Discharge, E Series and Workman Pump Wet Ends
To Install you should put silicon sealant on the back of the Metal part and gently push it into place with a 1" coupler as the push tool. Also the rubber part can use a light coat of silicon to slide it into place in the impeller.
We offer these alone, with The Professor's Silly Juice or with an Impeller in a kit so look in our store. Note: We offer this seal with the seal too and silicon, with the seal tool and silicon and bearings or the seal with the seal tool, silicon and an impeller in our store.
We have done a lot of extra work with videos and pictures to prevent you from choosing the wrong part..
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Visit our Store as we also offer these and other associated products and accessories for your Spa.
Please note: When you have a seal leaking in most cases you will need an impellor because the leak caused water to get into the metal shaft area that the impeller is screwed onto and expands and damages the impellor. We offer the impellers along with the seal in a kit in our store. The Hot Tub Professor offers How To Installation Videos on Seals and Impellers.