Chesterton 280M Mixer Cartridge Dual Seal

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Chesterton 280M Mixer Cartridge Dual Seal
Motion-Tolerant Dual Seal for High Reliability in Challenging Environments

  

​​​​​​​​​​​​​​​​​​​Every aspect of the Chesterton 280M design is optimized for high reliability in demanding conditions. This motion-tolerant dual seal:

  • Withstands run-out and end-play common to mixers, double-ended or vertical turbine pumps, and other rotating equipment
  • Delivers instant pressure-shift capability that eliminates worries under jarring purge and reverse pressure cycles 
  • Has vibration-isolated faces which thrive under conditions of drag and shear that destroy common seals
  • Designed with internal cooling that results in stable, long-life sealing
Chesterton 280M Mixer Seal
Cushioned, high-strength drives
Rugged, high-torque monolithic seal faces
High-flow pumping ring dissipates heat away from the faces
Large clearance barrier channel optimizes heat diss​ipatio​n
Large clearance barrier channel optimizes heat diss​ipatio​n
Self-Centering Lock Ring™ eliminates misalignment
Micropolished O-ring surfaces eliminate O-ring hang-up
Narrow rotating face prevents wiping of solids​
​​Sizes25 mm to 120 mm ​​​(1.00" to 4.75")
Pressure711 mm (28") Hg Vacuum to 40 bar g (600 psig)
17 bar g (250 psig) outboard
Temperature-55° C to 300° C  (-67° F to 570° F);See back page for actual material limits by type of elastomer​​​​​
Speed20 m/s (4000 fpm)

 

 

Article: Reduce Flush Water Usage and Increase Plant Profitability (English)http://chestertondocs.chesterton.com/Rotating/Reduce Flush Water Usage and Increase Plant Profitability.pdfArticle: Reduce Flush Water Usage and Increase Plant Profitability (English)pdf
Article: What Determines Seal Leakage? (English)http://chestertondocs.chesterton.com/Rotating/What Determines Seal Leakage.pdfArticle: What Determines Seal Leakage? (English)pdf
Catalog: Rotating Equipment Solutions - Mechanical Seals, Pump Packing, Gaskets, and Morehttp://chestertondocs.chesterton.com/Rotating/RotatingCAT.pdfCatalog: Rotating Equipment Solutions - Mechanical Seals, Pump Packing, Gaskets, and Morepdf
Technical Material Reference (English)http://chestertondocs.chesterton.com/Rotating/EN23875_Technical_Material_Reference.pdfTechnical Material Reference (English)pdf
Article: Selecting a Sanitary Mixer Seal for Pharmaceutical Applications (English)http://chestertondocs.chesterton.com/Rotating/Selecting a Sanitary Mixer Seal for Pharmaceutical Applications.pdfArticle: Selecting a Sanitary Mixer Seal for Pharmaceutical Applications (English)pdf