John Crane has enabled a 99.8% reduction in water consumption at a leading LNG export facility in Louisiana, US, through the deployment of its advanced Type SB2 USP dual-cartridge seal.
The project demonstrates the significant sustainability gains achievable through modern mechanical seal design and resource-efficient engineering.
By supplying the Type SB2 USP seals to support high-temperature hot well pump operations, John Crane enabled the facility to reduce daily water usage from approximately 2,000 gallons to just 3–4 gallons. This dramatic reduction delivers both immediate cost savings and long-term efficiency benefits for the operator.
Previously, the pumps relied on conventional mechanical seals with an API Plan 32 demineralised water flush, which required a continuous supply of treated water to cool and lubricate the seal faces.
In contrast, the Type SB2 USP seals are engineered to operate reliably between 180°C and 200°C with minimal water use.
John Crane’s Type SB2 USP seal leverages proprietary non-contacting upstream pumping technology, using buffer fluid to cool and lubricate the seal faces. This innovation minimises the need for external water flushes while maintaining stable performance under demanding conditions. The solution was delivered and installed within eight weeks, with no implementation challenges reported, enabling the operator to achieve immediate, measurable water savings.
“This project shows what is possible when advanced sealing technology is applied to high-temperature, high-demand processes,” said Mike Eason, chief technology officer, John Crane. “Achieving a 99.8% reduction in water consumption is a powerful example of how engineering innovation can support both operational efficiency and responsible resource management.”
John Crane delivers water savings for leading LNG export facility
