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 generated from engines and providing appropriate torque to main rotors and other accessory systems.
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Liquid Chromatography Reciprocating Piston Pump
Category
Critical Applications
3 min
Description
Liquid chromatography equipment is an analytical tool used to separate, identify and quantify components in a liquid mixture for purity and content. The equipment utilizes reciprocating pumps to pass pressurized liquid solvents with sample mixtures through a column filled with a solid absorbent material. Positive displacement pumps use Omniseal® spring-energized seals to optimize performance and equipment longevity.
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Power Generation Natural Gas Turbine
Category
Critical Applications
4 min
Description
A natural gas turbine is a type of internal combustion (IC) engine, converting the heat produced by natural gases into mechanical energy. This energy is then supplied to power generators that produce electricity for residential and industrial use. Gas turbines are used to power aircraft, trains, ships, electrical generators, pumps, gas compressors, and tanks. There are three significant manufacturers: General Electric of the US, Siemens of Germany and Mitsubishi Hitachi Power Systems of Japan.
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Microsurgical Device Miniature Motor
Category
Special Sizes & Shapes
3 min
Description
Powered, microsurgical devices is a trend that began in the early 2010s with developments in minimally invasive surgery providing the benefits of smaller incisions and more versatile solutions for surgeons, including better patient recovery times. Since then, the industry has seen a rise in miniature motors in surgical tools, pumps and ventilation equipment. Since these tools must be precise, reliable and withstand over a thousand autoclave cycles, the micromotors operating the tools are placed under challenging and strenuous demands.
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Satellite Structural Bracket Connector
Category
Critical Applications
3 min
Description
A critical part of a satellite is its structural subsystem, which is designed to survive launch loads and protect the operation of other subsystems. Structures are often classified into primary and secondary components, the latter includes struts and brackets that are used in different configurations as needed. Several satellite elements in static or relative movement are linked together by structural bracket connectors that are fixed securely to the satellite body. Similar to many “flying vehicles,” satellites are designed with materials as light and compact as possible, especially in small and nanosatellites.
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Launch Vehicle Large Fuel Tank
Category
Special Sizes & Shapes
3 min
Description
Launch vehicles are most often propelled using fluids with liquid oxygen being the most common oxidizer and fuel being liquid hydrogen or kerosene and most recently liquid methane. All these fluids (except kerosene) are commonly stored at cryogenic temperatures.
Sealing is critical when liquid oxygen or hydrogen are involved since they are easily ignitable. Any small amount of leakage can create a hazardous situation, which can lead to a potential explosion of the whole launch system. Leakage requirements are therefore quite stringent.
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