Troubleshooting mechanical seals - Heat cracking or checking

from Chesterton
Posted 3-22-04

SEAL FACE - HEAT CHECKING                    SEAL FACE - HEAT CHECKING

SYMPTOMS:

• Heat cracking or checking

CAUSES:

• Exceeded PV limits of seal face materials
• Dry running
• Excessive heat from product

FAILURE MODES:

• Lack of seal face lubrication
• Exceeded limits (speed, temperature, pressure)
• Inadequate environmental controls

SOLUTIONS:

• Operate within seal limits
• Eliminate dry running conditions
• Proper use of environmental controls