Metal bellow type mechanical seal for high temperatures
2874NE John Crane

A new highly reliable gas lubricated API 682 (ISO 21049) qualified high temperature non-contacting mechanical seal that utilises internally pressurised outward pumping spiral groove face technology with high-temperature seal features such as Inconel welded metal bellows and non-elastomeric carbon graphite secondary seals. This innovative design technology is ideally suited for reliably sealing high-temperature process fluids on rotating equipment up to 425° Celsius (800° Fahrenheit) and fluids requiring inert secondary seals.

* Innovative alternative to conventional wet contacting seals that permits reliable operation in high-temperature services
* Fugitive Emissions for Maximum Achievable Control Technology (MACT) compliance for sealing higher temperature, volatile, or hazardous fluids
* For use in API 610 pump and larger bore seal chambers
* API 682/ISO 21049 qualified
* Elastomer-free seal handles a wide range of applications
* Eliminates problems associated with coking barrier fluids and fouled heat exchangers