Mechanical Seal

Mechanical seals are the commonly use kind shaft seal device for agitating equipment and chemical reactor.

Send Inquiry

Description

Mechanical seals are the commonly use kind shaft seal device for agitating equipment and chemical reactor. Main function of shaft seal device is to help agitating shaft join together with pressure vessel by preventing leakage, keeping vessel pressure, or excluding contamination.

All end-face mechanical seals have both rotating elements and stationary elements and include five basic components: seal ring, mating ring, secondary sealing elements, springs & hardware.

Fig-1 Mechanical Seal(001)

TYPE SELECTION OF MECHANICAL SEAL FOR AGITATING REACTOR

Generally, the type selection of mechanical seal should according to the working medium in reactor, working pressure & temperature, agitating/stirring speed, diameter of agitating/stirring shaft & power of driving motor.

Material selection of mechanical seal should according to the working medium & temperature in reactor: sleeve material of mating ring seat: glass lined steel, SiC, Al2O3 Ceramics, Reinforced PTFE and etc; material of end-face(seal ring & mating ring): SiC-SiC, SiC-Reinforced PTFE，Al2O3 Ceramics-Reinforced PTFE，Al2O3 Ceramics-Modified graphite, and etc.

When working pressure lower than 0.4Mpa-a, commonly use single end-face mechanical seal; pressure higher than 0.4Mpa-a use double end-face mechanical seal; pressure higher than 0.6Mpa-a should use double end-face type mechanical seal with auxiliary device; when working temperature higher than 150 deg.C, it can not use material of PTFE; use Integrated with bearing structure type during diameter of agitating/stirring shaft & the power of the stirring motor are relatively large.

CLASSIFICATION OF MECHANICAL SEAL