circular metal flange with eight evenly spaced bolt holes and a threaded central opening

Pentair Flange 5 in. w/ Gasket and SS Hardware | Aurora 3800 Series | 357260

Regular price$242.99
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SKU:
357260
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About This Item

The Pentair Flange Assembly Kit (357260) is the OEM replacement 5-inch flange kit for the Aurora 3800 Series end suction pump, supplied as a complete assembly with gasket and stainless steel hardware.

IMPORTANT: THIS LISTING IS SOLD AS A KIT
Part 357260 is supplied as a complete kit — one 5-inch thermoplastic PVC flange, gasket, and stainless steel hardware — sold as a single kit unit. Confirm you require the complete assembly before ordering.

This thermoplastic PVC socket-style flange mates the pump's suction or discharge port to system plumbing. The included gasket provides the sealing interface between the flange and pump housing, while the stainless steel hardware delivers corrosion-resistant clamping force at the joint. Replacing a damaged or leaking flange assembly restores a watertight connection and prevents air ingestion or water loss at the pump interface.

Specifications

Pentair Part Number 357260
Part Name Flange 5 in. w/ Gasket and SS Hardware
Flange Size 5 inch
Connection Style Socket (PVC)
Material Thermoplastic PVC flange body; stainless steel hardware
Kit Contents Flange, gasket, stainless steel hardware
Quantity 1 kit (each)
Sub-Category Flange Assembly Kit — Pump Parts

Fits Into

Brand Equipment Line Model / Part Number Notes
Pentair Aurora 3800 Series 3801 Aurora Pump Accessory Flange Assembly Kit; thermoplastic PVC socket style. Verify fitment before ordering.

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 a flange assembly, inspect the mating pump housing port and surrounding mounting surface for hairline cracks or corrosion before installing the new kit. A compromised housing surface will prevent the new gasket from sealing correctly regardless of hardware torque. Hand-tighten the stainless steel fasteners in a cross pattern, then bring to snug — avoid over-torquing, which can distort the thermoplastic flange body and cause premature gasket failure.

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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