from Chesterton
Posted 9/27/2003
| ROTARY SEAL FACE – WIDE TRACK | STATIONARY SEAL FACE – NARROW |
SYMPTOMS: Wear track wider than narrow seal face
CAUSES: Miscentering of stationary type seal Radial shaft runout (bearing problem) Shaft deflection/wobble during operation
FAILURE MODES: Misinstallation Equipment conditions Equipment design
SOLUTIONS: Check bearings for radial runout exceeding limit of seal type Review installation techniques/instructions Calculate L/D ratio for equipment – Upgrade if necessary
