Chesterton SpiralTrac Pump Stuffing Box Environmental Controllers

SpiralTrac Environmental Controller
Install with Mechanical Seals/Packing for Effective Removal of Solids and Improved Cooling

​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​The SpiralTrac® Environmental Controller* is an exclusive, patented throat bushing specially engineered to transform and control the internal stuffing box environment in rotating process equipment to reduce downtime and extend equipment life. With unique versions designed to work with both Chesterton mechanical seals and packing, SpiralTrac modifies the flows that exist inside rotating processing equipment:

  • Enables particulates to be removed from the stuffing box (and away from packing or mechanical seals)
  • Permits air to evacuate the stuffing box upon flooding to retain cooling
  • Minimizes heat buildup in the stuffing box by creating circulation around
    seal faces.​

Avoid Complex Environmental Control Systems

SpiralTrac is us​ed with a small flush or no flush in chemical service applications and is machined in the bottom to effectively drain the seal cavity.

It is offered in four configurations:

  • Split: Split ring design for easy installation
  • Adapter: For non-standard stuffing box configurations
  • Standard: Bushing style
  • Packing: For use with compression packing

*SpiralTrac® is a registered trademark of EnviroSeal Engineering Products Ltd.​​

Learn more about the combination of Chesterton 442C Split Seal and SpiralTrac.​​
Extends seal reliability in most rotating equipment applications
Reduces cost of flushing in abrasive applications
Fits all rotating equipment
F (Split)Greatly reduced flush
NReduced/ no flush in non-fibrous fluids
DReduced/ no flush in fibrous fluids
P (Split)Packing version
CWith drain for crystallizing media

Available Materials
1.4401 (316 SS)
416 SS
PTFE – Glass-Filled
Ti/EN 3.7035
AWC800 – Red Polymer
Monel® K400 / EN 2.4360



Catalog: Mechanical Seals (English) Mechanical Seals (English)pdf
Brochure: Mechanical Seal Support System (English) Mechanical Seal Support System (English)pdf
Technical Material Reference (English) Material Reference (English)pdf
Brochure: Chesterton Enviroseal (English) Chesterton Enviroseal (English)pdf
Environmental Control Plans (English) Control Plans (English)pdf