Pentair Stainless Steel Back-Up Ring | FNS Plus, Quad D.E., Clean & Clear Plus & FullFloXF Filters | 195339 C8410 This vinyl ring with inserts

This vinyl ring with inserts provides the sealing and structural interface between the fitting body and the pool surface

Interchangeable flow tabs for marking ports (english & spanish included)

OEM Brand Product Name Part Number Notes Sundance Spas — 6540-488 Models dated before 2006 contain a core block/plug — transfer to new cartridge

Extremely durable blow molded plastic

Pentair Stainless Steel Back-Up Ring | FNS Plus, Quad D.E., Clean & Clear Plus & FullFloXF Filters | 195339 C8410 This vinyl ring with insertsThe Pentair Stainless Steel Back Up Ring (195339) is the OEM replacement seal component for Pentair FNS Plus, Quad D. E., Clean & Clear Plus, and FullFloXF series pool and spa filters. IMPORTANT: MANUFACTURING DATE REQUIREMENT This back up ring is designed for filters manufactured after February 2003 (FNS Plus and Quad D. E. models) and after March 2003 (Clean & Clear Plus models). Check your filter's manufacturing date label before ordering.