SEALING SENSE

I seal vertical shafts with standard mechan-ical seals? seals are used to seal vertical shaftsevery day in industry. Selecting the correct designand piping plan will lead to longer seal life and morereliable equipment operation. vertical -shafted fluidhandling equipment, though, presents slightly dif-ferent SEALING challenges than those found in othertypes of equipment. With vertical shafts, four variables influencechoice of seal design, seal face materials and pipingplan. They are: shaft speed, pressure, shaft size andequipment function. Shaft speed typically is characterized as low-,high- or extremely high-speed service. Low speed istypically defined as rotating at or below 300 RPM;high speed as 300 to 3700 RPM, and extremelyhigh speed as above 3700 RPM. Shaft size also is an important SEALING consider-ation. The seal's velocity is defined as the speed of apoint at the center of the narrow seal face (or thecorresponding wide face, if it rotates) and the dis-tance that point travels in a given time units identify this velocity as surface feetper minute.

Vertical Single Stage Pumps. circulate fluid or lift it to a processing area. They are generally used in lower-pressure, but higher-speed services sealed with

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  Leasing, Senses, Vertical, Sealing sense

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