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Radial shaft seal of Romo washing machine pump. Radial shaft seals, also known as lip seals, are used to seal rotary elements, such as a shaft or rotating bore.Common examples include strut seals, hydraulic pump seals, axle seals, power steering seals, and valve stem seals.
In mechanical engineering, an end-face mechanical seal (often shortened to mechanical seal) is a type of seal used 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 ...
API Standard 682, titled "Pumps - Shaft Sealing Systems for Centrifugal and Rotary Pumps," is the American Petroleum Institute standard for end-face mechanical seals. [1] The purpose of API 682 is to assist in the selection and operation of end face mechanical seals in centrifugal pumps .
A seal is a device or material that helps join systems, mechanisms or other materials together by preventing leakage (e.g. in a pumping system), containing pressure, or excluding contamination. The effectiveness of a seal is dependent on adhesion in the case of sealants and compression in the case of gaskets .
Ferrofluid-based seals used in industrial and scientific applications are most often packaged in mechanical seal assemblies called rotary feed-throughs, which also contain a central shaft, ball bearings, and outer housing. The ball bearings provide two functions: maintaining the shaft's centering within the seal gap and supporting external loads.
ISO 6194 Rotary-shaft lip-type seals incorporating elastomeric sealing elements ISO 6194-2:2009 Part 2: Vocabulary; ISO 6194-5 Identification of visual imperfections; ISO 6196 Micrographics - Vocabulary ISO 6196-1:1993 Part 1: General terms; ISO 6196-2:1993 Part 2: Image positions and methods of recording; ISO 6196-3:1997 Part 3: Film processing
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The shaft is the component that carries the medium through the rotary union into the drum or roll. In many cases the shaft will turn with the drum or roll. In some cases, like in larger flanged rotary unions, the shaft may be stationary while the housing rotates. The bearings and seal are typically assembled around the shaft.
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