Hayward Header O-Ring for Universal H-Series Heaters | HAXHOR1930

The Hayward Header O-Ring (HAXHOR1930) is the OEM replacement header O-ring for Hayward Universal H-Series pool and spa heaters. IMPORTANT: LUBRICATION REQUIRED — SOLD SEPARATELY Always lubricate this O-ring with a silicone-based lubricant before installation. Browse our Pool Plumbing Lubricants for a compatible silicone lubricant. IMPORTANT: PROFESSIONAL SERVICE REQUIRED Gas and electrical heater components must be serviced by a licensed pool professional or qualified HVAC technician. Do not attempt to service gas or high-voltage components without proper certification. This O-ring seals the header assembly on Hayward Universal H-Series heaters, maintaining a watertight connection at the header and preventing water bypass or leakage at that joint. Replacing a worn or cracked header O-ring restores the header seal and prevents flow loss through the heater. Specifications Hayward Part Number HAXHOR1930 UPC 610377291309 Channel Open Line Poolaroo Pro Tip Before installing this O-ring, clean the header seating groove thoroughly to remove any debris, scale, or remnants of the old O-ring. Apply a thin, even coat of a silicone-based lubricant — never petroleum-based grease — to ensure a proper seal without degrading the O-ring material. Browse Pool Plumbing Lubricants for a compatible option. Always have the heater shut down and depressurised before beginning any header work, and confirm service with a qualified technician.