Aladdin O-417 2-Inch Inspection Port O-Ring for Doughboy & Lomart

Key Fit

• O-417 Spider Gasket Specification – Designed for multiport valves requiring O-417 spider gasket sizing

• OEM-Quality Aladdin Replacement – Manufactured to meet original equipment sealing standards

• Directs Internal Water Flow – Seals internal valve channels to route water to the correct port

• Prevents Internal Bypass & Leaks – Helps stop dirty water from returning to the pool or leaking to waste

• Restores Proper Filtration Function – Supports correct valve operation and water clarity

• Direct Replacement Gasket – Installs into the valve groove; adhesive may be required depending on valve design

• Replacement Part Only – Intended to replace worn or damaged spider gaskets, not modify valve operation

The Aladdin O-417 Spider Gasket is a precision-molded replacement gasket designed for use in compatible pool filter multiport valves. This gasket creates sealed internal channels inside the valve body, directing water flow correctly between filtration, backwash, rinse, waste, recirculate, and closed positions.

Inside a multiport valve, the spider gasket plays a critical role in separating water pathways. Over time, constant exposure to pressure, chemical-treated water, and repeated valve handle movement can cause the gasket to harden, crack, or lose elasticity. When this happens, water may bypass internally, leading to problems such as dirty water returning to the pool, ineffective backwashing, or continuous water flow to the waste line.

Replacing a worn or damaged spider gasket restores proper internal sealing and allows the valve to operate as originally designed.

Why the Spider Gasket Matters

The spider gasket controls internal water routing inside the valve.

Why this matters:

• Prevents internal bypass between valve ports

• Ensures clean water returns to the pool

• Allows proper backwash and rinse operation

• Stops unwanted water loss to the waste line

• Maintains correct filtration system performance

A failing spider gasket can cause filtration issues that are often mistaken for filter or plumbing problems.

Designed for Multiport Valve Applications

The Aladdin O-417 Spider Gasket is manufactured to meet OEM dimensional and material standards to ensure proper fit and sealing in compatible multiport valves. Its rubber compound is formulated to withstand continuous water exposure, chemical treatment, and mechanical wear caused by valve rotation.

Aladdin is a trusted manufacturer of pool valve sealing components, known for consistent sizing and reliable material quality. Using the correct spider gasket ensures proper compression inside the valve without modifying the valve body or internal components.

Always confirm valve model compatibility before installation.

Service-Ready Replacement Component

Spider gasket replacement is commonly performed when diagnosing internal valve leakage, poor filtration performance, or water bypass issues. Installation typically involves opening the valve body, removing the old gasket, and seating the new gasket securely in the valve groove.

For best results, the valve housing should be cleaned thoroughly before installation. Some valve designs require gasket adhesive—always follow the valve manufacturer’s installation guidelines and allow adequate curing time if adhesive is used.

Inspect the valve rotor and sealing surfaces during service to ensure a complete and long-lasting repair.

Product Specifications

Buy with Confidence from Benchmark Pool Supply

When you purchase the Aladdin O-417 Spider Gasket from Benchmark Pool Supply, you’re getting a high-quality replacement component trusted by pool service professionals. We stock essential valve repair parts to help restore proper filtration performance and system reliability.

Benchmark Pool Supply is your trusted source for professional-grade pool valve components and maintenance supplies.