Stationary multiple spring
The gas seal unit for agitators enables the following functions. 1. Improvement by employing a non-contact gas seal Avoids contamination (e.g. abraded particles from sliding materials) Prevents liquid sealant from leaking into the vessel Applicable to the range out of the specifications for the contact type dry seal (high speed, high pressure) 2. Application in the medical/pharmaceutical, and food industries Avoids lubrication failure that occurs at start-up in batch operations Avoids sterilization failure between sliding surfaces during SIP (Sterilizing In Place)
Mechanical seals for pumps Pusher seals Non-contacting stationary spring unit design No process fluid penetration into the seal faces, no leakage to the atmospheric side Appropriate to slurry fluid Applicable inboard seal design for reverse and positive pressure Low power consumption
Single seal with double seal function Non-contacting from static to high speed condition Balanced Independent of direction of rotation Stationary multiple springs
Wear and contact free operation Self cleaning 3-D gas grooves High gas film stiffness Safe cupped retainer for rotating ring Available in various materials for optimized chemical resistance Proven, reliable and economical solution
The rotating ductile ring with a high performance coating is the main distinctive feature to other dry gas seals. It offers outstanding wear resistance in low speed conditions e.g. coast down or turning where contacting of seal faces is inevitable. The required radial space of this seal is smaller than existing Dry Gas Seals and the seal fi ts into small seal cavities, as you fi nd them in process gas screw compressors, without making any compromise with regard to seal reliability. The stationary spring loaded unit is supplied as a sub cartridge in combination with a rotating ductile seat integrating secondary functions such as centring and secondary sealing by means of an O-Ring allow the use of this seal as a component seal.