Applications
Aviation: Rotary Lip Seal Applications
Description
Omniseal® polymer rotary lip seals are used across commercial and military aviation in turbine engines, starters, alternators, fuel pumps, ram air turbines and flap actuators. These applications demand seals capable of operating at speeds in excess of 20,000 RPM, across wide temperature ranges, and in contact with turbine oils, de-icing fluids, greases and environmental contaminants. Omniseal® rotary lip seals outperform conventional elastomer seals in these conditions, offering lower friction, longer service life, reduced leakage and a smaller footprint than mechanical carbon face seals. All aviation products are manufactured to AS9100 standards.
Polymer Seals For Helicopter Lift Fans
Polymer Seals For Helicopter Main Gearbox
More Information
Temperature:
Pressure:
Speed:
Chemical Compatibility:
Seal Life:
Shelf Life:
Shaft/Bore Size:
FDA & EU1935/2004 compliant:
Tolerances:
From -53°C to 232°C (-65°F to 450°F)
Up to 35 bar (500 psi); higher pressures available with specific series
up to 35 m/s (7,000 ft/min); special designs available up to 100 m/s
Excellent
Extended seal life in dry or abrasive media
Unlimited shelf life
6 to 330 mm/16 to 380 mm (metal cased)
Materials for food, pharmaceutical and life science
Vary by diameter — consult hardware design guide
Depending on the type of Rotary Lip Seal, the solution can be used across a broad range of dynamic rotary sealing applications in lubricated and non-lubricated environments, including extreme temperature applications.
Applications include:
- General purpose, lubricated and non-lubricated (10, 20 series)
- Extreme temperature (10 series)
- Abrasive media and gas sealing (20, 10 series)
- High speed with positive media exclusion via threaded lip (30, 80 series)
- Low torque, environmental and dust exclusion (50, 20 series)
- Shaft runout and bore/shaft misalignment (60, 20 series)
- Medium-to-high pressure hydraulics (30 series)
- High pressure hydraulics (70 series)
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Case Studies
Discover in depth information and practical application tips in these use cases
Helicopter Main Gearbox
How would a helicopter main gearbox (MGB) successfully function without the proper sealing solution? Rotary lip seals are widely used to seal the oil lubricant within the gearbox and protect it from leaking out at where the shaft enters and exits the gearbox. The main gearbox, also known as a transmission, is a critical part in a helicopter’s airworthiness and safety because it is responsible for reducing high input speed.
Helicopter Main Rotor Swashplate
Flying a helicopter in an unpredictable and changing environment such as the desert or above the sea can lead to the accumulation of several kinds of potential aggressive contaminants, which are not clearly visibly on the bearings of the main shaft of a helicopter rotor. These damaging substances may cause jamming, ultimately leading to crash. The sealing of the swashplate is critical as it protects this aviation equipment from dust, sand, and debris.
Sealing Protection For EVTOL Propeller Bearings
In the past decade or so, there has been considerable progress in electric storage and motor technology, which are on the verge of moving the aviation industry ahead and opening new opportunities and uses. One example is the eVTOL (Electric Vertical Take-Off and Landing vehicle), where electric engines reduce noise pollution for quieter flights and provide zero emissions to help the environment.
Generator Seal In Hybrid Engine Aircraft
Recent advances in electrical motors, energy storage systems, and power electronics converters (PEC) are leading to aircraft becoming increasingly electrical. However, hybrid technologies are also a viable option for greener air travel. These hybrid engines convert several power sources to the relevant system of the aircraft, adjusting power supply to actual needs during flight.
Electric-Powered Aircraft: Electric Propulsion Unit (EPU)
An Electric Propulsion Unit (EPU) refers to the integrated system responsible for generating and managing thrust in electric-powered aircraft. This complex system plays a critical role in powering electric vertical takeoff and landing (eVTOL) aircraft – part of advanced air mobility (AAM) technologies.