The Watts AS-364-EP replacement O-ring (BB-ORING-E) maintains a watertight seal on Big Bubba filter housings, preventing leaks at the sump-to-cap junction. This genuine Watts part is precision-molded to fit Big Bubba series housings and should be replaced during routine filter changes to ensure optimal performance.
TECHNICAL DETAILS
O-Ring Specifications
| Manufacturer | Watts |
| Part Number | AS-364-EP (BB-ORING-E) |
| Component Type | Replacement O-ring seal |
| Compatible Housing | Big Bubba filter housings |
| Material | Durable elastomer compound |
| Application | Sump-to-lid seal |
| Recommended Replacement | Every filter change or annually |
COMPATIBILITY & APPLICATIONS
Housing Compatibility
This O-ring is engineered specifically for Watts Big Bubba filter housings. It creates a compression seal between the filter bowl and cap, preventing bypass and leakage in residential whole-house and point-of-entry filtration systems. Replace the O-ring whenever you change your filter cartridge or notice any moisture around the housing threads. Inspect the O-ring groove for debris before installation and apply a thin film of clean silicone grease to ensure proper seating and ease future removal.
💧 Always keep a spare O-ring on hand. A worn or missing O-ring is the most common cause of housing leaks, and replacing it during routine maintenance prevents emergency repairs.
