An end face mechanical seal, also referred to as a mechanical face seal but usually simply as a mechanical seal, is a type of seal utilised in rotating equipment, such as pumps, mixers, blowers, and compressors. When a pump operates, the liquid could leak out of the pump between the rotating shaft and the stationary pump casing. Since the shaft rotates, preventing this leakage can be difficult. Earlier pump models used mechanical packing (otherwise known as Gland Packing) to seal the shaft. Since World War II, mechanical seals have replaced packing in many applications.
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. For similar designs using flexible elements, see Radial shaft seal (a.k.a. "lip seal") and o-rings.
Read more about End Face Mechanical Seal: Mechanical Seal Fundamentals, Seal Face Technology, Seal Categories, Seal Piping Plans, Component Seals, Tandem and Double Seals, Origins
Famous quotes containing the words face, mechanical and/or seal:
“Old soldiers, Miss Dandridge. Someday you’ll learn how they hate to give up. Captain of a troop one day, every man’s face turned toward ya. Lieutenants jump when I growl. Now tomorrow, I’ll be glad if the blacksmith asks me to shoe a horse.”
—Frank S. Nugent (1908–1965)
“Prejudices are so to speak the mechanical instincts of men: through their prejudices they do without any effort many things they would find too difficult to think through to the point of resolving to do them.”
—G.C. (Georg Christoph)
“What is the seal of liberation?—No longer to be ashamed in our own presence.”
—Friedrich Nietzsche (1844–1900)