63597174C / 63597174P / WP252235 / AO-WH-STD-OR-2 O-Ring Replacement for 3M, AO Smith and Watts Filter Housings（3PCS）.

About this item HIGH-QUALITY MATERIALS: O-Ring is made of high-quality rubber material, which is sturdy and durable, has good abrasion resistance and corrosion resistance, and is not easy to be aged and oxidized. COMPATIBLE Compatible with 3M Aqua-Pure Aqua-Pure Water Filters Watts Premier Watts Filter Housings. Fits Housings: 3M AP11S, AP11T, AP12S, AP12T, AP26T, AP51T, AP101S, AP101T, AP102S, AP102T, AP110, FHO-34, FHT-34; and Watts 500222, 500223 WARM NOTE: Before purchasing, please check the product model and product size to make sure you are ordering the correct o-ring and avoid an unpleasant shopping experience PACKAGE INCLUDES: 3 o-rings, replace o-rings every third filter change to prevent leakage