Ensure your water filter operates at its best with the Culligan OR-250 O-Ring, designed to fit the WH-HD200-C model along with compatibility for 3M Filtrete and other selected brands. This durable rubber O-Ring is crafted and known for its quality and compatibility, providing a reliable seal to maintain water purity and system integrity. The OR-250 model is engineered for a perfect fit with specific filter systems Preserve the efficiency of your filtration system with this essential component, offering peace of mind with every sip of water.