Version C

Version C

  • Small or no flush in non fibrous applications
  • Enables venting of air from the seal cavity
  • Allows trapped product to escape

Similar to the version N, but with an integral bottom drain that allows process to drain from the seal cavity on pump shutdown, minimizing process crystallization problems on pump restart and increasing maintenance safety.

Typical Applications

chemical processing

Version C Image

Frequently Asked Questions all FAQs

No, the seal versions of SpiralTrac are not designed to work with packing. The only SpiralTrac that is specifically designed for packing is the Version P.

  • The spiral groove always faces the seal and should spiral in the direction of the shaft as viewed from the seal end looking toward the impeller. This will be either clockwise (right-hand rotation) or counterclockwise (left-hand rotation) as viewed from the drive end (typically, ANSI/ISO is clockwise, API is counterclockwise);

  • 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!); and,

  • For SpiralTrac Versions D and N (with an integral air vent), the air vent 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 (either packing or mechanical seal versions). Direction of rotation is determined from the motor end looking towards the impeller.

It depends on the application. If solids are removed, there are certain applications where the less expensive and cooler running soft faces can be used where only hard faces were used previously. Consult with EnviroSeal to determine your application's suitability.

The typical clearance between the SpiralTrac and the OD of the shaft is .018" / 0.46mm  radial, but this can vary depending on the size of the device and the material it is made from.

The Version C is available in Type I only. The drain must have a clear path to the impeller cavity in order to allow trapped product to completely drain from the seal cavity.

Yes.  SpiralTrac is designed to work with nearly any type or make of mechanical seal.

Absolutely!  The problems associated with air and solids in the cavity are the same with double seals as they are with single seals.  Double seals are expensive, and using SpiralTrac is an excellent, low-cost way of protecting your investment!

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Sample Success Stories Version C device

st version c with chesterton 180 seal in the pulp & paper industry no flush cover

ST Version C with Chesterton 180 Seal in the Pulp & Paper Industry NO FLUSH

Solution: seal
Application: Black Liquor
Equipment: ABS Scanpump

st version c with chesterton gss seal in the chemical industry cover

ST Version C with Chesterton GSS seal in the Chemical Industry

Solution: seal
Application: Chemical Waste Water
Equipment: Allis Chalmers pump


Version C Device Gallery

Right Oblique-thumbnail
Right Oblique 2-thumbnail
Group 1-thumbnail
ST front-thumbnail
Left Oblique-thumbnail
Right Oblique-thumbnail
Right Oblique-thumbnail
ST side-thumbnail
Left Oblique-thumbnail

Material options

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