Priest Electric
412 Simplot Blvd. Caldwell, ID 83605
208-459-6351 - 800-234-4089

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PRIEST ELECTRIC IS A PROUD MEMBER OF:


Electrical Apparatus Service Association

electrical motor repair, electrical motor re-wind, pump repair, Let us provide you with a quote for your job, and we'll bring you a complimentary set of the EASA Electrical & Mechanical Reference Handbooks!

Electrical Engineering Pocket Handbook, Mechanical Reference Handbook


Re-manufactured Motor Program

 Re-manufactured Motor Program Save money by rebuilding a motor instead of buying new Re-manufactured motors offer an affordable alternative to the higher prices of new electric motors!
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Watch Our Video

Idaho, Nevada, Oregon, Electric Motors and Pumps


Tech Tips

Pump Speed Changes

Electric Motor Bearing Lubrication

Mechanical Packing Braid Types

Electric Motor Frame Sizes

The History Of Electric Motors

Installation Of Pump and Valve Packings


Troubleshooting Packing Failures


Use VFD To Save Energy Costs

What Our Customers Say

For over twenty years our association with Priest Electric has and continues to be a great relationship. We appreciate the professional work performed, the products we have bought and the training and special service given by Lee and his staff.


Jerry Wilks, Round Mountain Gold, Round Mountain, Nevada.

We are very happy with the customer service, motors and the machine shop at Priest Electric. We get visits at least once a week to make sure all our needs are being addressed. We always get help locating motors or parts in rush situations. The machine shop at Priest Electric caters to us during machine break downs which is very much appreciated by us and our customers.
We thank Priest Electric for all they do for us.

Mark A. Garcia
Boise Packaging & Newsprint


We've tried the other guys in the past, and regretted it. Priest Electric always delivers above and beyond our expectations. They are top shelf in my book, and I'm happy to be working with them.

Todd Clayton
Clayton Calcium

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Troubleshooting Packing Failures

Packings may fail for a variety of reasons. Beside improper installation, packing failures are often due to worn or faulty equipment, shaft misalignment, uneven take-up on the gland bolts, and other causes.

If you are having trouble, carefully remove and examine the old packing set. DO NOT THROW THE SET AWAY, because it often gives clues as to the condition of the equipment, and may be the means of solving the problem. The following clues and possible causes were found by examining sets of packing which failed in service:

  • CLUE 1: Excessive reduction in cross-section of packing directly beneath the rod, shaft or plunger.
  • CLUE 2: Excessive reduction in the thickness of the packing directly over, or on eitherside of the rod or shaft.

    • POSSIBLE CAUSE: Rod or plunger out of alignment, and in the case of the rod or shaft, the bearings may be badly worn, causing whipping of the shaft.

  • CLUE 3: A whole ring, or part of a ring is missing from set.

    • POSSIBLE CAUSE: Bottom of stuffing box badly worn, with packing being extruded into the system.

  • CLUE 4: Wear on the outside of one or more rings.

    • POSSIBLE CAUSE: Rings rotating with shaft, or loose in the box. Packing too small.

  • CLUE 5: Axial bulge in one or more rings.

    • POSSIBLE CAUSE: Adjacent rings cut too short or too long, depending on the style of material used, causing packing under pressure to be deformed.

  • CLUE 6: Packings show tendency to extrude between rod or shaft, and the gland follower.

    • POSSIBLE CAUSE: Excessive gland bolt pressure and/or too much clearance between rod or shaft and the gland follower.

  • CLUE 7: Rings next to gland follower badly damaged, with bottom rings in fair condition.

    • POSSIBLE CAUSE: Improper installation of packings and excessive gland bolt pressure used.

  • CLUE 8: Wearing surface of rings dried and charred with rest of packings in good condition.

    • POSSIBLE CAUSE:High temperatures and lack of adequate lubrication.

  • CLUE 9: Innermost ring deteriorated.

    • POSSIBLE CAUSE: Packing incompatible with fluid handled.

Priest Electric Can Provide You With All Types Of Packing For Any Project

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