The patented NMF Lipseal Cartridge, type SIMPLY, is a remarkable and simple concept and build for different applications of shaft sealing. Over the last 30+ years these lipseals have proven to be a reliable replacement for mechanical seals, stuffing box packings or other shaft sealing products.
An important issue, besides details like pressure, temperature, chemical resistance and lifetime, is the requirements for sealing tightness. The German TA-Luft (Technische Anleitung zur Reinhaltung der Luft / Technical Instructions on Air Quality Control) is a comprehensive air pollution control regulation that sets the requirements for emission values for seals and other applications. The TA-Luft tests state the compliance demands for the emission of gaseous compounds from liquids.
The NMF lipseal cartridge has been tested for the TA-Luft standard by the organisation TÜV Nord, a German institute who can test for TA-Luft requirements. The obtained and confirmed leakage test values conclude that the lipseal cartridge has emissions far below the demand of 1*10-4mbar*l*s-1*m-1 set by the current TA-Luft threshold value (measurements with Helium as medium). Making the SIMPLY cartridge optimal for use as seal system, but most of all, it satisfies the demands of sealing density.
What makes the obtained test values even more special, is that they were reached without the usage of a barrier fluid. The SIMPLY cartridges, in the configuration “Duo” and “Duo Control”, are therefore considered as first-rate in terms of TA-Luft.
By the way: they can dry-run !
The SIMPLY cassette has been patented.