Count on the Pentair Seal Plate O-Ring U9-373Z Reliable Replacement Seal for reliable performance season after season.

The Pentair Seal Plate O‑Ring U9‑373Z is a genuine OEM replacement seal designed to provide a secure, leak‑resistant seal between the seal plate and pump housing in compatible pool pumps and filter systems. Proper sealing is critical to maintain optimum hydraulic performance, prevent water loss, and protect internal components from damage caused by leaks or pressure fluctuations.

Constructed from top-tier, chemical‑resistant elastomer, this O‑ring withstands exposure to pool water, sanitizers, and varying temperatures without cracking, swelling, or deteriorating. It’s ideal for maintenance, service, or pump rebuild projects where precise sealing is needed to keep your pool equipment running efficiently and quietly.

Have questions before you order? Our team is happy to help you pick the right part.