John Crane Aura 120NS

The Aura 120NS is a mechanical dry gas seal designed primarily for retrofitting into existing centrifugal compressors. It is engineered to fit within the narrow space constraints of older compressor designs without requiring a massive overhaul. This makes it highly valuable for oil, gas, and petrochemical operations looking to upgrade their sealing technology.

It utilizes a dry gas lubrication system combined with a narrow cross-section design to minimize the escape of process gases. By injecting a clean buffer gas into the seal, it maintains a positive barrier that keeps harmful emissions from entering the atmosphere. John Crane engineered this specifically to help facilities meet stringent environmental compliance standards.

The Aura 120NS is manufactured by John Crane, a major global provider of engineered products and services for rotating equipment. The company is headquartered in Chicago, Illinois, and has been a dominant force in industrial mechanical seal technology for decades. They supply these specialized seals to industrial facilities worldwide.

While it is designed for retrofits, installation of a dry gas seal like the Aura 120NS usually requires highly specialized technicians and often necessitates opening the compressor casing. Improper installation can lead to immediate seal failure and massive gas leakage. Facilities typically rely on John Crane's field service teams or heavily trained in-house millwrights to execute the complex swap.