The Watts WOR-R Residential Housing O-Ring is a precision-cut EPDM replacement seal designed for Watts 10" and 20" filter housings. Built to AS568-139 standards with dimensions of 2-3/16" ID x 2-3/8" OD x 3/32" cross-section, this o-ring ensures leak-free operation in residential water filtration systems.
TECHNICAL DETAILS
Watts WOR-R O-Ring Specifications
| Manufacturer | Watts |
| Model Number | WOR-R |
| Material | EPDM (Ethylene Propylene Diene Monomer) |
| Standard | AS568-139 Compatible |
| Inner Diameter (ID) | 2-3/16 inches |
| Outer Diameter (OD) | 2-3/8 inches |
| Cross-Section (CS) | 3/32 inches |
COMPATIBILITY & APPLICATIONS
Housing Compatibility
This o-ring is engineered specifically for Watts 10-inch and 20-inch residential filter housings. The EPDM material provides excellent resistance to water, temperature fluctuations, and aging, making it suitable for whole house filtration systems, under-sink units, and point-of-use applications. Replace the o-ring whenever you change filter cartridges or notice moisture around the housing sump to maintain proper seal integrity and prevent leaks.
💧 Keep a spare WOR-R o-ring on hand during filter changes. Even a small nick or dried-out seal can cause drips, and having a replacement ready prevents delays in getting your system back online.
