Gland packing may not be the most prominent component in industrial machinery systems. However, when leaks, excessive heat, or shaft damage occur, the cause is often improper selection or installation of gland packing. Many technicians face recurring issues ranging from uncontrolled leaks to machine component damage. Therefore, understanding common problems with gland packing and how to address them is an important step to ensure machines operate safely and efficiently. Here are 5 common gland packing problems along with practical solutions.
1. Excessive Leakage After Installation
Problem
After gland packing is installed, fluid continues to leak from the stuffing box in large amounts, indicating that the sealing is not optimal.
Common Causes
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Packing is not compressed tightly enough
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Packing size does not match the shaft and stuffing box diameter
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There are gaps between rings due to imprecise cutting
Solution
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Recheck the packing size using a caliper or machine technical data
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Ensure each ring is installed tightly and cut at a 45° angle for a perfect fit
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Tighten the gland follower gradually and evenly from both sides
2. Shaft Overheating
Problem
The temperature around the shaft rises drastically, risking wear or damage to the shaft and gland packing.
Common Causes
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Gland packing compression is too tight
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Insufficient or improper lubrication
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Packing material is not suitable for operating temperature
Solution
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Loosen the gland follower slightly to allow lubrication to enter
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Ensure lubricant or cooling fluid flows adequately
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Use heat-resistant gland packing materials, such as graphite or carbon
3. Gland Packing Wears Out Quickly
Problem
Gland packing needs frequent replacement even though the machine operates under normal conditions.
Common Causes
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Shaft is rough or worn, increasing friction
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Packing is not resistant to abrasive or corrosive media
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Installation does not follow proper procedures
Solution
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Regularly inspect the shaft condition and ensure a smooth surface
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Use wear-resistant packing materials, such as aramid, for abrasive fluids
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Follow the official installation guidelines from the gland packing manufacturer
4. Gland Packing Burns or Turns Black
Problem
The packing becomes black, hard, or even emits a burnt smell.
Common Causes
Solution
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Replace with high-temperature resistant materials (graphite or carbon)
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Ensure constant lubrication during operation
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Adjust pressure, avoiding excessive force on the gland follower
Read also: How to Choose the Right Gland Packing for Your Industry
5. Leakage After a Few Days of Operation
Problem
Initially, gland packing works optimally, but after a few days, leakage reappears.
Common Causes
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Packing experiences “creep” due to pressure and temperature
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Gaps between rings due to loose installation
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Flushing system is not working effectively
Solution
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Perform adjustments (re-tightening) after the first few hours or days of operation
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Ensure the flushing system or additional lubricant functions normally
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Use high-quality packing from a trusted brand
Additional Tips to Make Gland Packing Last Longer
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Use a special cutting tool for precise cuts
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Do not mix different types of gland packing in one stuffing box
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Store packing in a clean and dry place
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Conduct regular monitoring during machine operation
Conclusion
Gland packing can be either a weak point or a key protector in industrial machinery systems, depending on installation, material selection, and maintenance. By recognizing and addressing the common problems above, the packing’s lifespan can be extended, machine performance remains optimal, and operational costs become more efficient. PT. Sinar Surya Lestari provides a variety of high-performance gland packing for various industrial applications.