Features and Benefits
• Qualified for Category 1 ASME B73.1 and Category 2 API 610 pumps per API 682 design and test criteria.
• Multiple coil springs in Type A pusher seals are non-wetted and non-rotating for excellent clogging
resistance under imperfect equipment alignment conditions.
• Edge-welded metal bellows in Type B seals rotate with the shaft for a self-cleaning effect that helps prevent accumulation of debris.
• Thermal management technology enhances seal face heat transfer, reduces seal face temperatures and increases tolerance to dry running events.
• Hydraulically retained and double balanced seal faces in all versions allow continued operation during unintended reverse pressurization.
• Circulating device integrated into the dual seal cartridge circulates barrier fluid to keep the seal faces cool. A circulating device is also available on single seals for fluids over 75°C (167°F).
• Available multiport flush distributes flush fluid evenly around the seal faces to eliminate temperature gradients and improve seal face flatness.
• Gland throttle bushings are available in fixed, floating, and segmented varieties to provide secondary containment in single seal arrangements.