Replacement 274494 Adapter O-Ring – Compatible with Pool/Spa Filter, Heater & Valve Systems

Pentair 274494 Adapter O Ring – Leak-Free Seal for Pool/Spa Filter, Heater & Valve Systems

The Pentair 274494 adapter O ring is a reliable replacement part for pool and spa systems. It creates a tight, watertight seal at key connection points, helping to stop leaks and keep your system running smoothly. If your filter or valve connection is leaking, this adapter O-ring is often the perfect fix.

What This Adapter O Ring Does

The o-ring adapter sits between joined parts, filling small gaps and preventing water from escaping. A worn or damaged O-ring can cause pressure loss and leaks, reducing system efficiency. Replacing it restores proper performance and ensures your pool or spa operates reliably. This part is designed for long-lasting durability in pool and spa environments.

Compatible Pool & Spa Systems

This Pentair 274494 adapter o-ring works with several Pentair systems, including:

Pool & Spa Filters

• Pentair FNS DE filters
• Nautilus and Nautilus Plus DE filters
• TR100C and TR140C sand filters
• Triton II, Triton C, and Triton C-3 filters

Heaters

• Pentair Minimax NT STD
• Minimax NT LN
• Minimax NT TSI

Valves

• Pentair HiFlow valves
• FullFlow valves
• Push Pull pool and spa valves

Always match dimensions before ordering.

Key Features

• Replacement adapter o-ring for pool and spa equipment
• Helps prevent leaks at filter, heater, and valve connections
• Maintains proper pressure and water flow
• Flexible design for a snug fit
• Built for long-term use in pool systems

This o-ring adapter is ideal for routine maintenance.

Technical Specifications

• SKU: BF-274-494
• Part Number: 274494
• Type: Cover O-Ring
• Color: Black

O Ring Dimensions

• Inner Diameter: 2.35 inches
• Outer Diameter: 2.77 inches
• Thickness: 0.21 inches

Correct sizing ensures a secure seal.

Alternate Part Numbers (Reference Only)

This Pentair 274494 adapter o ring replaces multiple part numbers, including:

SPX4000Z1, 13-1023-06-R, R0339600, 35505-1424, PAC-061-3050, AEQO83, O-83, O83, U9-185, ALDO-83, APCO2372, and others.

These numbers are for cross-reference only.

Why Replace Your Adapter O Ring?

• Old O-rings crack and flatten.
• Leaks waste water and energy.
• Pressure loss reduces filter efficiency

A new adapter o ring is a low-cost fix that protects your system.

Important Disclaimer!

This is a replacement part, not an original (OEM) product. Brand names and part numbers are provided for reference and compatibility only.