The PureT HOR-03 891 Series Standard Housing O-Ring (Model 241) is a precision-engineered Buna-N seal designed to create leak-free connections in standard water filter housings. Built to AS568-241 specifications with dimensions of 3 7/8" ID x 4 1/8" OD x 1/8" cross-section, this o-ring delivers reliable performance across residential and light commercial filtration systems.
TECHNICAL DETAILS
Precision Seal Specifications
| Part Number | HOR-03 (241) |
| Standard Compliance | AS568-241 |
| Material | Buna-N (Nitrile Rubber) |
| Inner Diameter (ID) | 3 7/8 inches |
| Outer Diameter (OD) | 4 1/8 inches |
| Cross-Section (CS) | 1/8 inch |
| Temperature Range | 32°F to 180°F (typical Buna-N) |
COMPATIBILITY & APPLICATIONS
Fits Standard 10-Inch Filter Housings
This AS568-241 o-ring is engineered for PureT 891 Series standard filter housings and most comparable 10-inch filter housings from major manufacturers. The Buna-N material offers excellent resistance to water, mild acids, and petroleum-based contaminants, making it suitable for municipal water, well water, and general filtration applications. Replace this seal during routine filter cartridge changes or whenever you notice moisture at the housing connection to maintain system integrity and prevent leaks.
💧 Keep a spare o-ring on hand and lightly lubricate with food-grade silicone grease during installation to extend seal life and ensure easier housing removal during filter changes.
