Description
O-Ring Replacement for A.O. Smith (AO-WH-STD-OR-2) – 2 Pack
| Feature | Details |
|---|---|
| Compatibility | For A.O. Smith whole house systems: AO-WH-PRE, AO-WH-PREV, and under sink system AO-MF-B |
| Part Number | AO-WH-STD-OR-2 |
| Packaging | Bulk packaging |
| Quantity | 2x – O-Rings |
This O-ring replacement is a direct after-market replacement part for A.O. Smith systems. Ensure proper installation according to manufacturer specifications to prevent leakage. Dimensions: 3.44″ Diameter
Note: Improper installation may result in product failure or leakage. Always follow manufacturer guidelines during installation.
Product Overview:
The A.O. Smith AO-WH-STD-OR-2 replacement O-Ring is designed to maintain a watertight seal for whole-house and under-sink filtration systems. Built for reliability, this O-ring provides consistent performance and long-term durability in both residential and light-commercial water systems.
Features & Benefits:
- Precision fit for AO-WH-PRE, AO-WH-PREV, and AO-MF-B systems
- Resists wear, swelling, and deformation under continuous water pressure
- Ensures proper sealing to reduce leaks and maintain system efficiency
- Ideal for regular maintenance or system refurbishing
Installation Notes:
Before installing, remove any debris or residue from the housing and sealing surface. Lightly lubricate the new O-ring to ease installation and prevent twisting or tearing. Confirm it is properly seated before tightening the housing.
Key Advantages:
- Maintains watertight integrity for filtration housings
- Durable construction for long service life
- 3.44-inch diameter ensures accurate system fit
- Compatible with multiple A.O. Smith filter units
All items are brand-new aftermarket replacements. Satisfaction guaranteed.


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