Viton Premium Seal Kit (Spring Seal, Ceramic, Lexan Cup) for Balboa Ultra Jet. 

Fits 99% of all Ultra Jet pumps, all current models, fits PUWW, PUUF, PUUL, PUUP, PUUM, PUBF, PUSF, PUUT, 'DJ' Series, Theraflo and Theramax pumps.

Viton is much more resistant to chemicals such as chlorine, ozone, and bromine, and has very good temperature resistance and better 'memory' which makes it a superior, longer-lasting seal. This is an upgrade as compared to the PPUFSEAL which is the standard pump seal.

This seal assembly fits many pumps private labelled for Marquis Spas, Coleman Spas, Artesian Spas, Cal Spas, and many others.