Hayward SPX5500H Strainer Cover O-Ring

What This Part Is Used For
The Hayward SPX5500H is a strainer cover O-ring used on compatible Hayward pump strainer lids. It seals the lid to the strainer housing so the pump can pull suction and maintain prime. This O-ring is located at the pump basket lid connection.

Why This Part Matters
A worn lid seal is a top cause of suction air leaks that look like low flow, noisy operation, or a pump that keeps losing prime. Air in the pump reduces filtration performance and can create flow related faults on heaters, cleaners, and chlorinators. Replacing the correct O-ring restores a tight seal and stable circulation without chasing plumbing leaks. It is a common fix during routine pump basket cleanings and spring startup.

Key Features and Specifications

• Manufacturer part number: SPX5500H
• Strainer cover O-ring for compatible Hayward pump lids
• Seals lid to strainer housing to prevent suction air leaks
• Helps maintain prime and consistent circulation flow
• Common service replacement for flattened, cracked, or dry lid seals

Installation and Fitment Guidance
Shut off power and open the pump lid only after the system is off. Clean the groove and install the O-ring so it sits flat and does not twist when the lid is secured. Confirm by manufacturer part number before ordering.

About the Hayward Brand
Hayward manufactures an integrated lineup of pool equipment including pumps, filters, heaters, automation, cleaners, chlorination systems, and service parts. Their pumps are commonly installed on residential pads and work in tandem with Hayward filtration and heating equipment. Keeping suction side seals in good shape supports overall system performance and reduces nuisance service calls. Hayward replacement parts are widely supported across the pool industry.

Common Service Context
Techs typically replace strainer cover O-rings when a pump lid shows bubbles, the pump struggles to prime, or the system surges with air after basket cleanings. It is often identified by a lid that looks seated but still hisses or draws air.