Hayward SX200R Locknut

What This Part Is Used For
The Hayward SX200R is a locknut used on compatible Hayward sand filter assemblies. It secures a fitting or internal component at a tank wall or internal connection point so parts stay tight and aligned. This hardware is used during filter assembly and service rebuilds.

Why This Part Matters
A cracked, stripped, or missing locknut can cause fittings to loosen and create leaks at the tank wall or internal joints. Loose hardware can also make it difficult to keep seals seated correctly, leading to repeat drips. Replacing the correct locknut restores proper clamping force without improvised fixes. It is a common need when older hardware has been overtightened or damaged during repairs.

Key Features and Specifications

• Manufacturer part number: SX200R
• Locknut for compatible Hayward sand filter assemblies
• Secures fittings and components during assembly
• Used to maintain alignment and sealing at connection points
• Service replacement hardware for filter rebuilds

Installation and Fitment Guidance
Depressurize the filter completely before tightening or removing internal hardware. Tighten evenly and only to the point needed to seat seals without stressing plastic fittings. Confirm by manufacturer part number before ordering.

About the Hayward Brand
Hayward manufactures a full ecosystem of pool equipment including pumps, filters, heaters, automation controls, cleaners, chlorination systems, and service parts. Their sand filters are widely used and supported with serviceable internal components and hardware for long term maintenance. This compatibility helps technicians rebuild filters rather than replace complete units. Hayward replacement parts are widely supported across the pool industry.

Common Service Context
Techs typically replace locknuts when a bulkhead or internal fitting will not stay tight or when hardware threads are damaged during a rebuild. It is often identified when a leak persists at a connection point even with new O-rings.