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Sticker on the pump body (the part with the basket), not on the motor. Motor labels from Century, A.O. Smith or Regal won't match parts.
Label on the side of the tank near the base. Size is in sq ft, e.g. 420 sq ft = C4030 or CCP420.
Rating plate inside the front access panel. Note the BTU and gas type (NG or LP).
Molded into the body or printed on top. Robotic cleaners: on the power supply.
Still not sure? Call (818) 818-6559 and we'll find it for you.
On the Pentair FullfloXF 4000 Series 72 188625 Filter diagram
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Other parts on the same Pentair FullfloXF 4000 Series 72 188625 Filter
The Pentair Tank O-Ring 39010200 is an OEM replacement designed to maintain a secure seal on Pentair Clean and Clear Plus, FNS Plus, and Quad DE filter systems. This O-ring prevents leaks at the clamp connection, ensuring proper pressure and efficient system performance. With an inside diameter of 20-1/8 inches and a thickness of 1/2 inch, it is precisely sized for reliable sealing across multiple Pentair filter models. Manufactured from durable rubber, it resists wear and stretching under pool conditions, helping to preserve filter integrity. Replacing worn O-rings with this OEM component protects water clarity and prevents pressure loss that can impact filtration.
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Crucial for Sealing: The Pentair 39010200 tank O-ring is a vital OEM part that prevents leaks at the filter tank clamp, maintaining correct system pressure and protecting circulation efficiency.
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Wide Compatibility: Fits Pentair Clean and Clear Plus cartridge filters, FNS Plus DE filters, and Quad DE filter systems, offering dependable use across multiple product lines.
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Durable Rubber Build: Constructed from resilient rubber material designed to withstand chlorine exposure, pressure fluctuations, and long-term system operation without failure.
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Precise Dimensions: Manufactured with a 20-1/8 inch inside diameter and 1/2 inch thickness, ensuring a tight, reliable fit that eliminates air and water bypass.
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Maintenance Essential: Regular replacement of this O-ring helps extend filter life by preventing pressure loss and maintaining efficient pool water filtration.
- (1) Pentair 39010200 O-Ring
- Pentair Clean and Clear Plus Filters
- Pentair FNS Plus Filters
- Pentair Quad DE Filters





