Troubleshooting Mechanical Seals | Centered/ Miscentered | Part 3

Chesterton

Centered/Miscentered

mechanical seals, stationary (seal type) centered, rotary (seal type) miscentered

STATIONARY (TYPE SEAL) – CENTERED

ROTARY (TYPE SEAL) – MISCENTERED

SYMPTOMS:

Centered or miscentered

CAUSES:

Centered seal face wear track indicates
Properly centered seal and good equipment operation
Miscentered seal face wear track indicates miscentered seal (rotary type) during installation
Equipment condition – Radial runout Equipment operation – Off curve, vibration

FAILURE MODES:

Misinstallation Equipment conditions

SOLUTIONS:

Check bearings for radial runout exceeding limit of seal type
Review installation techniques/instructions
Check equipment for shaft – Seal chamber concentricity

Chesterton

This is a 9 part series. Click to view each article: 1 : 2 : 3 : 4 : 5 : 6 : 7 : 8 : 9

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The 9 articles in this series will outline common issues with mechanical seals, how to notice them, and troubleshooting tips. The series addresses: wide wear track, centered/miscentered, even/uneven wear track, scoring, chipping, coking, heat cracking or checking, and blistering.

Troubleshooting Mechanical Seals | Centered/ Miscentered | Part 3