5/8" type 7 cup ceramic mechanical seal Suits Waterway Executive and most other Waterway pumps, Spaquip Scorpio, Spa Systems Pirahna jet Pumps, some Finsbury & Waterco Pumps and others Also used in Waterway ww 600-3000 5 way diverter valve as a shaft seal. Measurements - ceramic section - 32mm OD (including rubber boot) Spring section - 36.7mm OD stainless cup.
Ceramic / carbon / Nitrile elastomers

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