Mechanical seal type : TSK-L1K-D75

Description

MECHANICAL SEAL, TYPE: TSK-L1K- D75 -EF
>SIZE: 75 MM
MATERIAL: SILICON CARBIDE
COMPANY : CEMER
Mechanical seals are devices that are used to provide a seal at the point of entry or exit of a rotating shaft. Typically it is used to prevent the leakage of one high pressure fluid into a lower pressure fluid. Given that Health and Safety and Environmental legislation are becoming more stringent and the need to have improved efficiency of process equipment the need for a reliable and predictable mechanical seal performance is an important aspect that users of pressurised rotating equipment need to consider. Given also that the design emphasis of new rotating equipment focuses on higher performance characteristics this in turn dictates that the mechanical seals used on such equipment has to be able to operate under the most arduous conditions.

Although actual mechanical seal designs and configurations can vary significantly, in general the mechanical seal is characterised by a pair of seal faces, one of which is connected to the rotating shaft, and the other is connected to the stationary casing of the equipment being sealed. During normal operation a very thin fluid film is present between the rotating and stationary face, the function of which is necessary to lubricate the sealing faces and thereby prevent excessive wear. In most practical applications the fluid film will be approximately 2 microns thick and is composed entirely of the process fluid. To complicate matters the nature of most process fluids is such that they offer little or no lubrication characteristics and are often adversely affected by transient thermal effects produced during seal operation. It follows that a thorough understanding of factors affecting seal face flatness are an important issue in mechanical seal design.