A leaking bulkhead fitting can quickly turn into water loss, air intrusion, and reduced filtration performance. The Aladdin O-409-0 Bulkhead O-Ring is a precision replacement designed to restore a secure, watertight seal in critical pool filter and plumbing connections. Manufactured to replace Pentair® OEM part 192320, this O-ring delivers reliable OEM-equivalent fit and performance.

At Benchmark Pool Supply, we see bulkhead O-rings fail more often than most pool owners realize. Over time, exposure to chlorine, pressure cycling, and temperature changes causes O-rings to flatten, harden, or crack. Replacing the worn seal with the Aladdin O-409-0 helps prevent leaks before they lead to larger equipment issues or unnecessary service calls.

This O-ring is manufactured from durable, pool-grade elastomer formulated specifically for swimming pool environments. It resists chemical degradation, maintains elasticity, and provides consistent compression—ensuring long-term sealing performance in both residential and commercial pool systems.

Designed for Pentair Bulkhead Applications

The Aladdin O-409-0 O-Ring is engineered to exact dimensional tolerances to ensure proper seating and compression in Pentair bulkhead connections. It is a direct replacement for Pentair® 192320 and is commonly used across several Pentair filter platforms.

Compatible systems include:

• Pentair Clean & Clear® pool filters

• Pentair Nautilus® FNS® filters

• Pentair TR100C and TR140C filters

• Pac-Fab® branded filtration equipment

Using the correct O-ring is critical for bulkhead fittings, where even minor size variations can lead to persistent leaks. The O-409-0 is designed to match original specifications for dependable sealing.

Why Replacing a Bulkhead O-Ring Matters

Bulkhead fittings pass through filter tanks and equipment housings, making them one of the most leak-prone sealing points in a pool system. A failing O-ring can cause issues such as:

• Water leaking around filter tanks or bulkhead fittings

• Air entering the system and affecting pump prime

• Loss of system pressure and filtration efficiency

• Increased water and chemical consumption

Replacing the bulkhead O-ring with the Aladdin O-409-0 is a simple, low-cost repair that protects your equipment and keeps your pool operating efficiently.

Built for Long-Term Pool Use

Unlike generic rubber seals, this O-ring is designed specifically for pool and spa applications. It holds up against continuous exposure to sanitizers, pressure, and temperature changes—making it ideal for both routine maintenance and leak repairs.

This makes the O-409-0 a reliable choice for:

• Seasonal filter servicing

• Preventive maintenance

• Professional pool technicians

• DIY pool owners performing repairs

Product Specifications

Buy with Confidence from Benchmark Pool Supply

When you purchase the Aladdin O-409-0 Bulkhead O-Ring from Benchmark Pool Supply, you’re buying from a trusted pool equipment specialist—not a generic parts seller. We stock parts that fit correctly, perform reliably, and are backed by real-world pool experience.

Our team is always available to help confirm compatibility or answer installation questions so you can order with confidence.