Packing Gland – Proven Sealing Technology for Special Applications
For many years, the packing gland was the standard sealing solution in plant engineering. Even today, it continues to prove its value in specific applications where simple, robust sealing concepts are required.
A packing gland is designed to operate with a defined, minimal leakage. This controlled leakage is essential, as it provides cooling and lubrication for the packing rings, ensuring stable operation and preventing overheating.
Controlled leakage for reliable operation
When correctly adjusted, the packing gland typically allows a leakage rate of approximately 20 to 40 drops per minute. The actual leakage rate depends on several operating parameters, including:
- Operating pressure
- Shaft speed
- Pumped medium
- Process temperature
Proper adjustment is therefore essential to achieve a balance between sealing performance and packing lifetime.
Design options and materials
In many applications, a lantern ring with two connections is installed within the packing set. This allows product leakage to be diluted, flushed, and safely discharged, improving operational reliability.
Depending on the application, different packing materials and material combinations are used to meet specific process requirements, such as chemical resistance, temperature stability, or abrasion resistance.
