• Manufacturer: Hayward 

• Type: O-Ring 

• Material: Rubber 

The Hayward HAXHOR1930 Header O-ring fits multiple Hayward H-Series Millivolt Electronic ED1 style pool heater models, including H2001, H1501, and H2501. This pool and spa replacement o-ring also fits Hayward Induced Draft and Low Nox Induced Draft heaters.