The Cleveland FA05002-37 O-Ring Viton is a sealing ring used in selected commercial steam equipment assemblies. Made from Viton material, the ring sits between mating components to create a sealed connection within the assembly. It can be considered when an existing seal shows cracking, flattening, wear, or other signs of deterioration. The compact design makes this type of O-ring suitable for applications where a properly sized seal is required between connected parts. The ring size, material, sealing position, and equipment application can be considered together when choosing a replacement. Checking these points before ordering provides a practical way to identify the appropriate component for the equipment being serviced.