circular thin stainless steel backup ring used as a replacement part for pool and spa filters

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.

CALIFORNIA PROPOSITION 65 WARNING: This product can expose you to chemicals which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information, go to www.P65Warnings.ca.gov.
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Pentair Pool Products and Parts

About Pentair Pool Products and Parts

Pentair is often considered the "gold standard" for pool professionals, and for good reason. Founded in 1966 (originally by five inventors making high-altitude balloons!), the company has evolved into the global leader in smart, sustainable water solutions. For the DIY homeowner, Pentair represents the intersection of rugged durability and silicon valley-tier technology. They pioneered the Variable Speed Pump revolution with the IntelliFlo®, saving American pool owners millions in energy costs. Today, their ecosystem focuses heavily on automation, allowing you to control your pump, heater, lights, and chemistry from a single app. While they are a favorite among professional builders, their "EC" (E-Commerce) line of equipment allows homeowners to access pro-grade technology with valid warranties for DIY installation.

Why We Trust Pentair Pool Products and Parts
Energy Efficiency Leaders: Recipient of the ENERGY STAR® Partner of the Year award for over a decade; their pumps are designed to pay for themselves in energy savings.

Smart Automation: The Pentair Home App and IntelliCenter systems offer best-in-class control over your pool ecosystem from anywhere in the world.

Professional Pedigree: The brand most often recommended and installed by pool builders for high-end residential pools.

Eco-Conscious: Dedicated to reducing water waste and energy consumption through "Green" technology innovations.

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