Pentair Stainless Steel Back-Up Ring | FNS Plus, Quad D.E., Clean & Clear Plus & FullFloXF Filters | 195339
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- SKU:
- 195339
-
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About This Item
The 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. FullFloXF C-Series models have no date restriction.
The stainless steel back-up ring seats at the base of the filter tank, providing structural support for the internal filter assembly and maintaining a secure, leak-resistant seal between the tank body and its components. A worn or damaged back-up ring can result in internal bypass, pressure loss, or tank assembly instability during filtration cycles.
Specifications
| Pentair Part Number | 195339 |
| Part Name | SS Back-Up Ring |
| Quantity | 1 (Each) |
| Compatible Filter Types | D.E. Filter, Cartridge Filter, High-Efficiency Filter |
| Manufacturing Date Requirement | After 2/03 (FNS Plus, Quad D.E.); After 3/03 (Clean & Clear Plus) |
Fits Into
| Brand | Equipment Line | Model / Part Number | Notes |
| Pentair | FNS Plus | FNS Plus 24 | Filters manufactured after 2/03 |
| Pentair | FNS Plus | FNS Plus 36 | Filters manufactured after 2/03 |
| Pentair | FNS Plus | FNS Plus 48 | Filters manufactured after 2/03 |
| Pentair | FNS Plus | FNS Plus 60 | Filters manufactured after 2/03 |
| Pentair | Quad D.E. | Quad 60 | Ring back-up FNS Plus configuration |
| Pentair | Quad D.E. | Quad 80 | Ring back-up FNS Plus configuration |
| Pentair | Quad D.E. | Quad 100 | Ring back-up FNS Plus configuration |
| Pentair | Clean & Clear Plus | Clean & Clear Plus 240 | Filters manufactured after 3/03 |
| Pentair | Clean & Clear Plus | Clean & Clear Plus 320 | Filters manufactured after 3/03 |
| Pentair | Clean & Clear Plus | Clean & Clear Plus 420 | Filters manufactured after 3/03 |
| Pentair | Clean & Clear Plus | Clean & Clear Plus 520 | Filters manufactured after 3/03 |
| Pentair | FullFloXF | C620 | Included in Tank Bottom assembly (Item 20) |
| Pentair | FullFloXF | FullFloXF C-Series | Also included in Tank Bottom assembly (Item 20) |
Compatibility is based on Pentair parts documentation and available OEM records. This is not an exhaustive list. For certainty, verify the part number in your equipment's manual or on the original part itself before ordering.
Poolaroo Pro Tip
When replacing this back-up ring, inspect the tank bottom seat and the surrounding sealing surfaces for corrosion, pitting, or debris before reinstalling. Because this ring is stainless steel, it is resistant to corrosion — but scale buildup or grit on the seating surface can prevent a flush fit and cause leaks after reassembly. A quick wipe-down of the seat with a clean cloth before placing the new ring ensures proper seating and a secure tank closure.
