Dry gas seals

A dry gas seal is a non-contacting mechanical seal designed to prevent gas leakage in compressors. It replaces oil-lubricated seals, providing higher reliability, lower maintenance, and improved energy efficiency. Used in centrifugal and other compressors, dry gas seals for centrifugal compressors are critical for demanding industrial applications, including oil and gas, power generation, and hydrogen or CCUS systems.

A dry gas seal works by creating a non-contacting barrier between the rotating shaft and the stationary compressor housing. Using spiral groove or other face technology, it prevents gas leakage while reducing friction. This ensures reliable compressor operation, minimal wear on dry gas seal components, and long-lasting performance in centrifugal compressors and other rotating equipment.

Dry gas seals prevent leakage of harmful gases, reduce friction, and eliminate the need for oil lubrication. By minimising emissions, lowering energy consumption, and supporting cleaner operations, dry gas seal systems for centrifugal compressors are an environmentally responsible solution for industries including LNG, hydrogen, and CCUS applications.

A dry gas seal in a compressor is installed between the bearing and compression stages to prevent process gas from leaking. Supplied with filtered product gas at pressures above suction, these compressor dry gas seal systems ensure safe, reliable, and efficient operation while reducing emissions and maintenance in high-speed centrifugal compressors.

To fit a dry gas seal, ensure the compressor shaft and housing are clean and undamaged. Carefully install the dry gas seal components following the manufacturer’s specifications, align the seal faces, and verify gas supply pressures. Proper installation ensures optimal performance, reliability, and long service life in compressor dry gas seal systems.