Navien O-Ring Replacement Seal for Tankless Water Heaters and Boilers

Navien O-ring replacement seals are made for Navien condensing tankless water heaters and combi boilers. They restore watertight and airtight connections at fittings, heat exchanger connections, filters, pump and flow components, and other service points. Replace worn, flattened or leaking O-rings (also called rubber seals or sealing rings) to keep the unit running as designed.

Key Features:

• Navien OEM replacement parts built for Navien tankless water heater and boiler platforms
• Elastomer construction in materials such as EPDM, NBR or silicone, chosen for each sealing location and for exposure to hot water
• Resists heat, aging and water for dependable long-term sealing
• Multiple sizes and profiles to cover the different sealing points inside the unit
• Routine maintenance and repair: a fresh O-ring helps prevent leaks when you service filters, flow sensors, pumps and fittings

Replacing O-rings whenever a connection is opened is a standard step in tankless water heater and boiler service. It helps prevent drips and leaks that can cause water damage or lower performance. Select the exact part number for your unit and service location.