Mide Technology Equipment
Reliant™ HydroActive™ Bulkhead Shaft Seals
Shock- and vibration-qualified non-contacting bulkhead shaft seals developed for US Navy destroyers, allowing shaft deflections up to 50 mm.
Description
Following the USS Cole bombing, the US Navy entrusted Mide to develop a solution for failing bulkhead shaft seals on Arleigh Burke Class destroyers (DDG); the result was the Reliant and Omni product lines. Reliant seals provide HydroActive non-contacting sealing with shock and vibration qualification and very large allowable shaft deflections.
Key features
- Reliant YM: flat interface plates bolted to the bulkhead on which the seal floats, reducing system weight and simplifying maintenance
- Reliant HD: large machined housing and cartridge arrangement for shaft motions in excess of three inches
- Reliant RM: cartridge or diaphragm replacement retrofit for ships that already have bulkhead seal housings
- Shaft diameter 75 to 1000 mm; deflection up to 50 mm; self centering
- Shock MIL-S-901D Grade A; vibration MIL-STD-167-1A
- Tested to 30 psi; leak rate less than 473 mL/min
Applications
Naval combatants including US Navy LCS vessels, waterjet propulsion systems, cardan and composite shafting, pump shafts and dredgers.
Specifications
| Shaft diameter range | 75 to 1000 mm |
|---|---|
| Operating pressure | Tested to 30 psi |
| Leak rate | Less than 473 mL/min, 0.125 GPM |
| Shaft deflection | Up to 50 mm |
| Shock | MIL-S-901D, Grade A |
| Vibration | MIL-STD-167-1A |
| Self centering | Yes |
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