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Thomson Mix-All dual balanced multi-spring cartridge seal for Mixers

TMA-3 & TMA-3B


  • Preassembled Cartridge design.
  • Dual faces for added containment.
  • Able to accommodate process upset without losing seal integrity.
  • Buffer fluid to cool faces.
  • Available with or without integral bearing.
  • Bi-directional.



  • Top entry Mixers/Agitators/Blenders.
  • Chemically aggressive or Hazardous media.
  • Pulp and Paper
  • Ore processing
  • Chemical
  • Pharmaceutical
  • Food and Beveridge

Download Datasheet

Application Form


Operating Range

  • Pressure Max: 360 psig (25 bar)
  • Temperature Range: -40F to 400F (-40C to 200C)
  • Max Speed: 800 fpm (4 m/s)

Standard Materials

  • Seal Faces : Resin impregnated graphite carbon, antimony carbon graphite, silicon carbide.
  • O-Rings : FKM, EPDM, Nitrile, Aflas, FFKM.
  • Springs: Hastelloy C
  • Metallurgy*: 316SS

* Hastelloy C, Alloy 20 and Titanium available upon request.