In certain extreme applications, a Qualiseal part made of individual segments may meet your critical performance requirements better than a single-piece unit. Just tell us what you’re trying to accomplish and we’ll find the ideal solution.
Segmented seals ride directly along the shaft and are primarily used in low-pressure applications.
These seals contain a series of segmented carbon rings which contact the shaft or rotor. Segments inside the seal housing are kept in the proper location by anti-rotation keys or pins. A secondary seal is formed by the axial spring loading of the seal rings against the internal surface of the housing face. During movement, a continuous seal is always in contact with either the primary or secondary sealing surfaces.
- Gas seals and for sealing low pressure liquids
- Tolerance to unlimited shaft axial movement
- Prevents oil and contaminant migration into the process gas side
- Leakage rates remain constant over the life of the seal
- Rides directly along the shaft
- Special gap segments permit the seal to adjust dimensionally for minimal leakage
- Compression and garter springs ensure that segments remain in contact with mating surfaces during low delta pressure and shutdown conditions
- Pressures up to 100 PSIA (689.5 kPa)
- Temperatures: -100° F (-73°C) to over 2,000°F (1,093°C)
- Shaft rotation speeds up to 40,000 FPM (203 m/s)
- Various seal ring segment configurations
- Pressure-balanced segments
- Fractured rings
- Multiple seal labyrinth
- Internally pressurized seal
- Internally vented seal
Primary Seal Materials:
- Silicon carbide
- Alloy and stainless steel
- Hardened alloy and stainless steel
- Hard chrome plate
- Chrome oxide
- Tungsten carbide
- Silicon carbide
- Aircraft engine main shafts
- Accessory gearboxes
- Rotating and/or reciprocating machinery
- High-speed compressors
- Nuclear marine
Contact us to learn more about our Segmented Seals.