Mechanical Seal

A fluid-sealing device commonly used in rotating equipment, such as pumps, mixers, blowers, and compressors, composed of lapped seal faces that are installed perpendicular to the shaft. An end face mechanical seal uses both rigid and flexible elements that maintain contact at a sealing interface and slide on each other, allowing a rotating element to pass through a sealed case. The elements are both hydraulically and mechanically loaded with a spring or other device to maintain contact.