Chesterton 442M Mixer Split Seal

Chesterton 442M Mixer Split Seal
Split Seal that Accommodates Radial and Axial Shaft Motion for Industrial Mixers & Agitators

​​​​​​​​The Chesterton 442M split mechanical seal eliminates the need for equipment disassembly during seal installation and reduces maintenance costs. This split technology includes vacuum-to-positive pressure capability, which is especially beneficial in process vessel material transfer. It accommodates large radial and axial shaft motion associated with industrial mixers, agitators, reactors, and blenders.

  • ​Installation is made easy with patented, automatic centering
  • Uses many patented features allowing for easy and cost-effective field repair
  • The unique ball-and-socket O-Rings are the easiest to install and are leak-free without the use of adhesives
  • Available in sizes ranging from 20 mm to 610 mm (.75" in.-24 in.)
Ball-and-socket O-rings
Patented, automatic centering
Patented, captive fasteners that will not fall out
Large axial and radial motion handling capability
Full vacuum and high pressure sealings
Non-clog external springs
Non-fretting to equipment
Dry run capable
Compact design
Integral dual flushport
Sizes20 mm to 305 mm
(0.75" to 12.00")
Pressure711 mm (28") Hg Vacuum to 31 bar g  (450 psig*)
Temperature120° C  (250° F)
Speed20 m/s (4000 fpm)



Technical Material Reference (English) Material Reference (English)pdf
Catalog: Rotating Equipment Solutions - Mechanical Seals, Pump Packing, Gaskets, and More (English) Rotating Equipment Solutions - Mechanical Seals, Pump Packing, Gaskets, and More (English)pdf
Environmental Control Plans (English) Control Plans (English)pdf
Brochure: Chesterton 442m Split Seal (English) Chesterton 442m Split Seal (English)pdf
Installation Instructions: 442M Mixer Seal (English) Instructions: 442M Mixer Seal (English)pdf