Description
Product Overview
The 39010200 Tank Clamp O-Ring for Pentair Clean & Clear Plus / FNS Plus DE Filters is a precision-engineered replacement part designed to restore proper function and stop leaks in your pool or spa equipment. Manufactured to meet or exceed OEM specifications, this component delivers reliable, long-lasting performance at a fraction of the dealer price.
Pool equipment operates in a harsh environment — constant exposure to chlorinated water, UV radiation, temperature swings, and pressure cycles. When seals, O-rings, and internal components degrade, the result is leaks, poor filtration, and higher operating costs.
Key Features
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OEM-Spec Precision: Manufactured to exact dimensional tolerances for guaranteed fit without modifications.
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Chemical-Resistant Materials: EPDM, Viton, or chemical-grade polymers resist degradation from chlorine, bromine, salt, and UV.
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Extended Service Life: Premium materials deliver 2-3x the service life of economy alternatives.
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Easy DIY Installation: Straightforward replacement with basic hand tools — most jobs take 15-30 minutes.
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Value Pack Savings: Multi-pack options available — stock up and save vs buying singles when applicable.
Compatibility
| Specification |
Detail |
| Brand |
Pentair Pool & Spa |
| Replaces Part # |
39010200 |
| Material |
EPDM Rubber / Engineered Polymer |
| Application |
Residential & Light Commercial Pool/Spa |
When to Replace
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Visible Leaks: Water seeping from connections or housings = failed seal or gasket
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Decreased Performance: Reduced flow, poor filtration = worn internal components
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Unusual Noise: Grinding or squealing = worn bearings, gears, or impellers
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Age: Rubber seals should be replaced every 2-3 years as preventive maintenance
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Hard/Cracked Rubber: O-rings that feel hard or show surface cracks no longer seal properly
Installation Tips
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Turn Off Equipment: Switch off at circuit breaker before working on pool equipment.
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Release Pressure: Open air relief valve on filter to release system pressure.
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Clean All Surfaces: Remove old gasket material and debris — clean surface = proper seal.
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Use Proper Lubricant: Silicone-based pool lube only. NEVER use petroleum jelly — it destroys EPDM.
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Tighten Evenly: Cross-pattern tightening for multi-bolt connections.
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Test Before Full Operation: Run briefly and check all connections.
Frequently Asked Questions
Q: Which Pentair filter models does this fit?
A: Compatible with: Clean & Clear Plus cartridge filters (CCP320, CCP420, CCP520), FNS Plus DE filters (FNS Plus 24, 36, 48, 60), and Nautilus FNS DE filters. Any Pentair filter using screw-type tank clamp band with 39010200 seal.
Q: How often should I replace the tank O-ring?
A: Every 2-3 years under normal residential use. Replace sooner if: water seeping from tank seam, O-ring feels hard/flattened, visible cracks, or O-ring stretched and no longer fits snugly. Commercial pools should replace annually.
Q: Do I need lubricant for the new O-ring?
A: Yes! Apply silicone-based pool lubricant (Magic Lube or similar) generously to entire O-ring before installation. Helps ring seat properly, prevents pinching, extends seal life. NEVER use petroleum jelly — it degrades EPDM rubber.
Q: My filter still leaks after replacing — what now?
A: Check: 1) O-ring groove is clean 2) Tank halves properly aligned 3) Clamp band tightened evenly (alternating sides) 4) Spring on clamp has tension 5) Tank rim not cracked or warped from overtightening.
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