Version D

Version D

  • Small or no flush in fibrous applications
  • Enables venting of air from the seal cavity
  • Drives circulation and exchange

Used in fibrous (paper stock) applications with a small flush, 5-8 gph (0.3-0.5 lpm), if the product is aerated and single seals are used, or with no flush.

Typical Applications

Pulp n Paper: pulp

Version D Image

Frequently Asked Questions all FAQs

They differ in the length of the devices and the applications that they are used in:

  • Version N typically used in non-fibrous applications (silt, sand)

  • Version D typically used in fibrous applications (pulp, corn mash, wastewater)

  • Version C typically used in intermittent services (product crystallizes, hardened when cooled)

No, these SpiralTracs are not designed to work with packing.

Typically, yes, providing there is enough room in the seal cavity for both the seal and SpiralTrac.  In fact, SpiralTrac is an excellent and economical way of protecting your high cost double mechanical seals.

Typically, hard face seal combinations are used when erosive solids are present in the seal cavity.  With SpiralTrac, however, solids are no longer present in the cavity.  Since the seal is now operating in a cleaner environment, soft face seal combinations can be used at substantially reduced costs.  Soft face seal combinations will also run cooler, further extending the mechanical seal’s life.  Contact your seal manufacturer for recommendation. 

Yes.  There are many installations where we are able to run flush free under the right conditions.  After application details have been submitted and looked at, we can help you determine whether your application can run flush free with SpiralTrac.

  • The spiral groove always faces the seal and should spiral in the direction of the shaft as viewed from the seal end looking towards the impeller.

  • The part number is engraved on the impeller end of the SpiralTrac.

  • There is an installation label indicating the direction of rotation (which should be removed prior to installation).

  • If an air vent exists, it must be in the 12 o'clock position.

  • Double-ended pumps: There should be one left-hand rotation device and one right-hand rotation device.  Direction of rotation is determined from the motor end looking towards the impeller.

The typical clearance between the SpiralTrac and the OD of the shaft is 0.018" / 0.46mm radial, but this can vary depending on the size of the device and the material it is made from.

Yes!  SpiralTrac can be designed to work with all mechanical seals.

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Essential Documents

Sample Success Stories Version D device

st version d with 442 split seal in the pulp & paper industry no flush cover

St Version D with 442 Split Seal in the Pulp & Paper Industry NO FLUSH

Solution: seal
Application: Pulp
Equipment: IHI Refiner (DIP)

st version d type i with 280 seal in the pulp & paper industry cover

ST Version D Type I with 280 Seal in the Pulp & Paper Industry

Solution: seal
Application: Black Liquor
Equipment: C2 High Pressure Digester Pump

st version d type i in the food processing industry cover

ST Version D Type I in the Food Processing Industry

Solution: seal
Application: Ethanol
Equipment: Goulds 3196 XLTX Pump


Version D Device Gallery

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Left Oblique-thumbnail
Right Oblique-thumbnail
Group 2-thumbnail
Group 3 2 -thumbnail
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Material options

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