- High-Quality Replacement O-Rings: This pack includes three 151121 o-rings (gaskets/seals) designed for reliable performance and durability in various applications. - Extensive Compatibility: - Replace part numbers: Pentek 151121; American Plumber W38-OR, 152031; Ametek 151121; Campbell 10800-034; Culligan OR-38; GE WS03X10001; Watts WP113029, 113029, OR-4. - Fits multiple housing series: Compatible with Pentek/Pentair 3G Slim Line, Flat Cap Slim Line, Standard Flat Cap, and Counter Top Slim Line Series, as well as models from Ace, American, Ametek, Culligan, GE, Glacier Bay, and Watts. - Precise Specifications: Each o-ring features an inside diameter of 3.36 inches (approximately 3-3/8 inches) and a thickness of 0.14 inches (slightly over 1/8 inch), ensuring a perfect fit for optimal sealing. - Practical Applications: - Ideal for use in water filtration systems, where a secure seal is essential to prevent leaks and ensure clean water. - Suitable for residential plumbing repairs, offering a reliable solution for maintaining water pressure and quality in various household fixtures. - Reliable Performance: Crafted from durable materials, these o-rings offer excellent resistance to wear and tear, ensuring long-lasting functionality in demanding environments. - Easy Installation: Designed for straightforward replacement, these o-rings save time and effort in maintenance, helping you keep your water systems running smoothly.