Description
Navien 20019090A NBR O-Ring — OEM Replacement Seal
Keep your Navien tankless water heater or condensing boiler operating at peak performance with this genuine OEM replacement O-ring. Engineered to Navien’s exact factory specifications, part number 20019090A delivers a reliable, leak-free seal in critical fluid and gas connections throughout the unit.
Product Specifications
- Part Number: 20019090A
- Material: NBR (Nitrile Butadiene Rubber)
- Inner Diameter: 33.7 mm
- Cross-Section Diameter: 3.5 mm
- Hardness: HR65 (Shore A 65)
- Color: Black
- OEM Navien replacement part
Why NBR?
Nitrile Butadiene Rubber is the industry-standard elastomer for water heater and boiler applications. Its excellent resistance to water, oils, and moderate temperatures makes it the ideal sealing material for the demanding thermal and hydraulic conditions found inside Navien condensing appliances.
Applications
- Navien tankless water heaters
- Navien condensing boilers
- Designed for use wherever the OEM O-ring of this dimension is specified during service or maintenance
Installation Notes
Always inspect mating surfaces for scoring or corrosion before installing a new O-ring. Lightly lubricate with a compatible, water-safe grease to ease installation and extend seal life. Replace O-rings any time a connection is disassembled to ensure a positive, leak-free seal.
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