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Marion Has Four Styles Of Shaft Seals. Clean-Ability and Maintenance Requirements Will Determine the Appropriate Seal Selection.

Style E-Stuffing Box Seal

  • A machined, barrel housing is welded to the mixer end plate
  • A UHMW washer and 4 woven TFE packing seals are used
  • The adjustable packing gland is field tightened to accommodate packing wear
  • Air purge feature helps prevent migration of material along the shaft
  • Ideal for most applications with periodic maintenance requirements
  • Machined seal housing equipped with threaded air purge connection
  • Standard on all chopper shaft applications

Style E - Split Seal

  • Machined seal housing is designed for quick disassembly and clean-out
  • Adjustable "finger knobs" allow maintenance without the use of tools
  • TFE/ synthetic or "food grade" Teflon packing materials are used
  • Machined seal plate is attached to the mixer end plate with no exposed cracks or crevices
  • Optional air purge is available to prevent migration of materials along the shaft
  • Ideal for sanitary applications where frequent cleaning is required
  • Machined mounting plate creates sanitary interface with mixer
  • Food grade packing materials are available

Mechanical Seal

  • Seals use mechanical interference of machined parts to prevent migration of material along the shaft
  • Air or liquid purge options are available
  • Once installed and adjusted, mechanical seals require less periodic maintenance
  • Mechanical seals are designed to accommodate greater amounts of shaft run-out
  • Ideal for liquid or pressure applications
  • Precision machined components

Style B - Inside/Outside Seal

  • Cast iron seal housings are through-bolted on either side of the mixer end plate
  • The housings are machined to accept either felt or woven TFE/synthetic packing
  • An oil lubricant port is piped to the exterior of the mixer
  • This rugged seal design is well suited for abrasive environments with dry materials
  • Single or double seal designs
  • Oil impregnated felt packing is compressed around shaft
  • Oil or grease lubricant is piped from seal housing
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