Aladdin O-469 Sta-Rite Pump Seal Plate O-Ring | U9-375

The Aladdin O-469 Seal Plate O-Ring is engineered to match the dimensions of the original Sta-Rite U9-375 trap-cover seal, providing a reliable barrier between the pump seal plate and housing. Manufactured from chemical-resistant elastomeric rubber, it maintains flexibility under pressure, heat, and daily pump operation to prevent air intrusion and water leakage. The O-469 follows the OEM sizing profile, typically around 6.75 inches outer diameter, 6.25 inches inner diameter, and a quarter-inch cross-section, allowing it to seat securely in Sta-Rite and related pump series including Dyna-Glas, Dyna-Max, Max-E-Glas II, and Dura-Glas II. When installed correctly, it restores proper priming, stable suction, and dependable hydraulic performance for efficient filtration.

Highlights

• OEM-Spec Dimensions: Matches the Sta-Rite U9-375 and O-12 sealing profile for correct placement and leak-free operation across compatible Sta-Rite pump families.

• Secures a Water-Tight Seal: Creates a uniform sealing surface that helps prevent leaks, air infiltration, pressure loss, and flow disruption.

• Durable Elastomer Build: Chemical-resistant rubber withstands sanitizers, heat, and continuous pump cycles without flattening or deteriorating.

• Sized for Sta-Rite Pumps: Fits pump models using roughly 6.75 inch OD, 6.25 inch ID, and quarter-inch thickness, including Dyna-Glas, Dyna-Max, Max-E-Glas II, and Dura-Glas II.

• Easy Replacement: Designed to seat smoothly into the trap-cover groove for quick installation during maintenance or pump reassembly.

Compatibility

• Sta-Rite Dyna-Glas Pumps
• Sta-Rite Dyna-Max Pumps
• Sta-Rite Max-E-Glas II Pumps
• Sta-Rite Dura-Glas II Pumps

Additional Info

The Aladdin O-469 Seal Plate O-Ring matches the Sta-Rite U9-375/O-12 trap-cover seal used in Dyna-Glas, Dyna-Max, Max-E-Glas II, Dura-Glas II, and similar pumps. This FAQ supports Wholesale Pool Mart customers who compare local pricing, check nearby stock, or gather parts ahead of scheduled service calls. These details help ensure the O-469 supports stable suction and leak-free operation.

Compatibility and Fitment Details

Service professionals often need to confirm exact seal dimensions before rebuilding Sta-Rite pump assemblies.

Is the O-469 designed to replace the U9-375/O-12 trap-cover seal?

Yes, the O-469 matches those OEM specifications, including approximate 6.75″ OD and 6.25″ ID measurements. If your pump references U9-375 or O-12, the O-469 is the correct replacement.

Will the O-469 fit consistently across Dyna-Glas, Dyna-Max, Max-E-Glas II, and Dura-Glas II?

Yes, these pump families share the same trap-cover groove dimensions. The O-469 seats uniformly and maintains proper compression for reliable sealing.

Can this O-ring help resolve priming issues or pressure fluctuations?

Often yes. Trap-cover seal failures allow air to enter the system, causing inconsistent flow. Installing the O-469 helps restore stable hydraulic performance.

Installation, Maintenance, and Service Preparation

Wholesale Pool Mart customers often prepare all needed seals in advance of a service job. This section outlines installation standards.

How should the O-469 be installed during pump service?

Clean the groove thoroughly, apply a light layer of silicone lubricant, and place the O-ring evenly without twisting. Re-tighten the trap cover securely for proper compression.

What problems occur when the trap-cover seal is worn?

Reduced suction, pump cavitation, recurring air bubbles, or water seepage around the lid are common indicators. The O-469 helps eliminate these failures.

How do technicians verify proper sealing after installation?

The pump should prime smoothly, hold steady suction, and show no moisture at the trap cover. Stable pressure readings indicate a proper seal.

Local Pricing, Stock, and Service Coordination

Wholesale Pool Mart customers often source parts across multiple locations to prepare for maintenance work.

Is the O-469 typically stocked across nearby Wholesale Pool Mart stores?

Yes, this seal is widely carried because Sta-Rite pumps remain common in many service regions. Checking local pricing helps plan for multi-system rebuilds.

What information should I have ready before calling?

Provide your pump model or the U9-375/O-12 reference number. Photos of your trap cover also help staff confirm compatibility.

Do technicians often replace additional parts with the O-469?

Yes, many service calls include additional seals, diffuser gaskets, and even replacement lids. Bundling parts ensures a complete and efficient rebuild.