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D Series Seal Brochure

D Series Seal Brochure

Product catalog summary

Overview: The D Series Balanced Pusher Seals are designed for high-temperature applications such as boiler feed water and hot hydrocarbon services. They feature a unique Plan 23 cooling chamber for enhanced performance.

Features and Benefits:

Integrated pumping ring in the rotating seal face maximizes circulation flow, eliminating the need for additional cooling systems.
Tungsten carbide rotating face ensures low leakage by maintaining flatness under all conditions.
Single coil spring design accommodates axial variations, common in high-temperature pumps.
U-cup seal provides flexibility and compensates for shaft misalignment.
Spring holder isolates the spring from torque, ensuring a strong drive linkage.
Available as a cartridge seal assembly or component installation.

Materials of Construction:

Metal Components: 316 Stainless Steel
Rotating Face: Silicon Carbide, Tungsten Carbide
Stationary Face: Carbon
Gaskets: Fluoroelastomer, Perfluoroelastomer, Nitrile, EPDM
Spring: 316 Stainless Steel

Operating Parameters:

Pressure: Up to 1000 psi (69.0 bar) for D, up to 1500 psi (103.4 bar) for DP
Temperature: -100 to 650°F (-73 to 343°C)
Specific Gravity: 0.45 and higher
Shaft Speed: Up to 75 fps (23 m/s)
Shaft Size: 0.525 to 5.400 inch (13.3 to 137.2 mm)

Specialized Designs:

DQ: High balance face for low hydrocarbon emissions.
DP: Custom stationary face for high pressure up to 1500 psi.
DZ: Short axial length for compact seal chambers.

Dimensional Data: The document provides detailed dimensional data for various seal sizes, both in inches and millimeters, to accommodate different application requirements.

Disclaimer: Flowserve emphasizes the importance of proper selection, installation, and maintenance of their products, noting that specifications are subject to change without notice.

D Series Seal Brochure

D Series Seal Brochure

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