This FDA-grade Buna-N square cut o-ring provides a reliable seal for Pentek, American Plumber, and US Filter Big Clear and Big White 10" and 20" filter housings. The 5 3/4" diameter design ensures compatibility with standard big blue residential and commercial filtration systems.
TECHNICAL DETAILS
O-Ring Specifications
| Diameter | 5 3/4 inches |
| Material | Buna-N (Nitrile Rubber) |
| Profile | Square Cut |
| Certification | FDA Grade for Potable Water |
| Temperature Range | 40°F to 180°F |
| Replaces | Pentek 151254 |
| Application | 10" and 20" Big Blue/Big White Housings |
COMPATIBILITY & APPLICATIONS
Compatible Filter Housings
This o-ring fits Pentek Big Clear 10" housings, American Plumber W10-PR and W20-PR series, and older US Filter Big White 10" and 20" housings. It replaces worn or damaged seals in residential whole-house systems, commercial pre-filtration setups, and point-of-entry applications. The square cut profile provides superior sealing performance compared to round o-rings in high-flow applications. Replace your housing o-ring annually or whenever you notice leaking around the sump connection to maintain system integrity and prevent water damage.
💧 Replace your filter housing o-ring every 12 months or at the first sign of leaking. A light coating of food-grade silicone grease on the o-ring before installation extends seal life and makes cartridge changes easier.
