Engineered to address specific operational challenges, from handling arduous conditions in offshore plants to simplifying maintenance in large rotating equipment.
COMPRESSOR SHAFT SEALING
Compressor seals
As the pioneer of dry gas seal technology, John Crane has more installations in turbomachinery products than any other vendor.
OUR COMPRESSOR SEALS
Explore our compressor seals
Separation seals
Pipeline applications are unique. At John Crane, we understand the importance of pipeline integrity, and of avoiding seal failure.
OVERVIEW
John Crane compressor seals – an overview
Compressor seals are industrial components designed to minimise leaks, maintain system efficiency and ensure the safe operation of equipment such as centrifugal compressors.
They achieve this by creating a reliable barrier between rotating and stationary components, reducing the risk of gas or fluid escaping while also optimising operational compressor sealing performance.
As the pioneer of dry gas seal technology, John Crane has more installations in turbomachinery products than any other vendor.
Our product portfolio of compressor seals, either dry gas seals or separation seals, covers many applications and provides low-risk solutions alongside optimal performance and reliability.
OUR EXPERTISE
HEALTH MONITORING
John Crane Sense® Turbo
John Crane Sense® Turbo embeds unique sensors into your mechanical dry gas seals and provides continuous condition monitoring at the heart of the compressor.
Using near real-time alerts and visualisations, it provides the detailed insights you need to detect and correct potential issues before they become a problem.
Seal reliability management
With John Crane Performance Plus™ our seal reliability management contracts help ensure improved reliability and production throughout your plant, while reducing safety incidents, fugitive emissions and total cost of ownership.
FREQUENTLY ASKED QUESTIONS
Common questions
What is a compressor shaft seal?
A compressor shaft seal is a critical component that prevents gas or fluid from escaping along a rotating shaft. It creates a tight barrier between stationary and moving parts, improving compressor sealing, efficiency and safety in industrial compressor systems.
How to replace a compressor shaft seal?
To replace a compressor shaft seal:
- Isolate and depressurise the compressor
- Remove the seal housing
- Extract the old compressor seal
- Install the new unit following the manufacturer’s specifications
Precision installation and proper alignment are essential. For safety and reliability, seal replacement should be handled by trained technicians.
How to tell if a compressor shaft seal is leaking?
A leaking compressor shaft seal may show signs such as gas or fluid leakage, pressure drops, reduced compressor efficiency or abnormal vibration. Changes detected in condition-monitoring data can also indicate compromised compressor sealing performance.
FURTHER READING
Read our latest insights on compressor seals
Improving compressor reliability with a dry gas seal retrofit
Dry gas seal retrofit eliminates mechanical seal leakage and saves over $600,000 annually for oil refinery
