Pentair
Pentair System:3 Filter Tank O-Ring
Best replacement seal for pool owners fixing filter tank leaks.
Maintain a leak-free pool filter system with the Pentair System:3 Filter Tank O-Ring. This genuine Pentair replacement part, number 39010200Z, ensures a tight seal for your filter tank, preventing common leaks. It is specifically designed for compatibility with Pentair FNS Plus, Clean and Clear Plus, and Quad D.E. filter models. Essential for routine maintenance, this O-ring seals both the top and bottom tank sections, keeping your pool equipment in optimal condition and ensuring efficient filtration.
$79.95
Owner Satisfaction
4.6
/ 5
Category Rank
96
/ 1440
#96 in Pool & Spa Filters
Price vs Category Average
-49%
Below average
Part Number
39010200
/ Z
Who it's for
- Budget-conscious homeowners preventing expensive future system repairs
- Pool owners needing a guaranteed leak-free seal
- Maintenance pros seeking long-lasting, chemical-resistant components
Who should skip it
- Frugal shoppers looking for the lowest possible replacement cost
- DIY beginners intimidated by complex, precise mechanical installations
- Pool owners preferring low-maintenance, set-and-forget equipment
Performance breakdown
Seal Integrity
Precision-engineered dimensions ensure a watertight seal for high-pressure filter tanks.
Material Durability
High-grade nitrile rubber resists chemical degradation from harsh pool sanitizers.
Installation Simplicity
Direct-fit design allows for quick, tool-free replacement during routine maintenance.
System Compatibility
Perfectly matched for Pentair's most popular FNS and cartridge filter lines.
Leak Prevention
Effectively eliminates common tank seam drips to maintain optimal system pressure.
OEM Reliability
Genuine manufacturer specifications guarantee consistent performance compared to generic aftermarket alternatives.
Key Specs
Part Number
39010200Z
Compatible Brands
Pentair
Compatible Models
FNS Plus Filters, Clean and Clear Plus Filters, Quad D.E. Filters
Intended Use
Repairing leaks in filter tanks
Filter Types Supported
Diatomaceous Earth (DE), Cartridge
Shape
O-ring
Gasket Material
Nitrile Rubber
End Cap Type
Closed
Features
- Provides a secure, leak-proof tank seal
- Repairs common filter tank leaks
- Compatible with multiple Pentair filter types
- Seals top and bottom tank sections
- Essential for filter maintenance
- High-quality, direct-fit replacement
What customers say
Customers overwhelmingly praise the Pentair System:3 Filter Tank O-Ring for its exceptional quality and perfect fit. The core theme is reliability; replacing worn seals with this genuine component immediately resolves persistent leaks, restoring system integrity. Reviewers stress that the precise dimensions and material quality ensure a dependable, leak-free seal, unlike generic substitutes. Installation is consistently reported as simple. Users find significant value in purchasing this essential maintenance item online, noting cost savings over local stores. This O-ring is viewed as an indispensable, high-quality part crucial for maintaining the optimal performance and longevity of the Pentair filtration system.
Know before you buy
If you notice water leaking from the seam where the top and bottom halves of your filter tank meet, the O-ring has likely degraded or become compressed. Replacing it is the standard first step to restoring a watertight seal.
This part is specifically designed for Pentair FNS Plus, Clean and Clear Plus, and Quad D.E. filter models. Please verify your filter model name against these series before purchasing.
Yes, this O-ring is designed to seal both the top and bottom tank sections. If you are performing a full maintenance overhaul, you may need to purchase two units if you intend to replace both seals simultaneously.
We recommend using a silicone-based lubricant on the new O-ring before installation. This helps ensure a proper seat and prevents the rubber from pinching or drying out prematurely.
Yes, this is a genuine Pentair replacement part, identified by part number 39010200Z. It is manufactured to the exact specifications of your original equipment for a direct, reliable fit.
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