O-rings are circular rings that are typically made of rubber or other elastomeric materials and are designed to create a watertight seal between two mating surfaces. O-rings are commonly used in faucets, valves, and other plumbing fixtures to prevent leaks and ensure a steady flow of water or other fluids. Get the perfect O-ring for any commercial kitchen plumbing part at PartsFe. ... https://partsfe.com/plumbing-parts/o-ring