Keyword: Seals and gaskets

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Briefs: Aerospace
Testing has shown that NASA's poppet reduces leakage rates of traditional aerospace cryogenic valves by three orders of magnitude.
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Application Briefs: Imaging
The Opti-Scan inspection system can measure surfaces and edges in 3D.
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Briefs: Materials
The adhesive that binds wet surfaces within seconds could be used to heal wounds or implant medical devices.
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Application Briefs: Mechanical & Fluid Systems

Millions of gallons of crude oil were released into the Gulf of Mexico during the seabed oil drilling catastrophe of 2010. Numerous strategies to stop or stem the oil flow...

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Briefs: Mechanical & Fluid Systems

Conventional pistons are made of a rigid chamber and a piston inside that can slide along the chamber’s inner wall while at the same time maintaining a tight seal. As a result, the piston...

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Briefs: Mechanical & Fluid Systems

Typical butterfly valves cannot seal at both ambient and cryogenic temperatures. At cryogenic temperatures, valves grow and shrink, changing critical dimensions such as distance between the disc and seat....

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Articles: Test & Measurement

This column presents technologies that have applications in commercial areas, possibly creating the products of tomorrow. To learn more about each technology, see the contact information provided for that innovation.

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Briefs: Aerospace

Innovators at NASA's Glenn Research Center have designed a superior seal assembly that is durable and highly dependable in extremely harsh environments. This...

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Briefs: Test & Measurement

Check valves are traditionally designed as a simple poppet/spring system where the spring is designed to equal the force created from the sealing area of the valve seat multiplied by...

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Briefs: Mechanical & Fluid Systems
Reusable Breakaway Mounting Device

Breakaway devices are used to mount objects to systems or structures (for example, cars, drones, helmets, buildings) and prevent damage when the objects fall away from the system. Unfortunately, even in ideal scenarios, many of these devices have limitations. Breakaway bolts and shear pins have the complication...

Articles: Motion Control

A new valve concept consists of a solid piston floating in a medium to control a flowstream. Although the conical shape of the seat is a prominent feature of the valve, especially when the concept was...

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Briefs: Mechanical & Fluid Systems

NASA Kennedy Space Center seeks partners interested in the commercial application of the Quick Disconnect for High Pressure Mate/De-Mate. Designed at KSC, this technology is intended for use in...

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Briefs: Mechanical & Fluid Systems

This technology is designed to protect against leaks in solenoid, check, manual, and relief valves, as well as disconnects and regulators.

NASA’s Marshall Space Flight Center has developed a new,...

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Briefs: Mechanical & Fluid Systems

An airlock used in space can provide the ability to leave a pressurized volume and enter free space. This is necessary to perform maintenance or make repairs to the pressurized volume or visiting spacecraft,...

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Briefs: Mechanical & Fluid Systems

Asealing device was developed that acts as a high-temperature shutoff valve for pipes and ducts. The device is an annular ring that can be slipped over the outside of the pipe (or built into a flanged...

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Briefs: Mechanical & Fluid Systems

In storage and/or transport of certain items, the ability to detect tampering with a container or compartment for such items can be necessary and valuable. In the transport of hazardous substances or nuclear materials...

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Articles: Imaging

Imaging lenses used in many industrial machine vision applications have special requirements beyond those of standard imaging lenses. The lenses used in factory automation, robotics, and industrial inspection...

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Briefs: Mechanical & Fluid Systems

Great strides are taken to miniaturize spaceflight instrumentation, particularly analytical systems such as liquid chromatographs, gas chromatographs, and mass...

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Briefs: Mechanical & Fluid Systems
Airfoil-Shaped Fluid Flow Tool for Use in Making Differential Measurements

Researchers at NASA’s Marshall Space Flight Center have developed a suite of adaptable flow measurement devices that can be easily installed without compromising the structural integrity of existing conduits. With their simple installation procedures, the devices can be...

Briefs: Mechanical & Fluid Systems
A magnetically retained pressure-relief valve enables quick-open on/off operation when overpressure is reached.

Inventors at NASA’s Kennedy Space Center have developed a magnetically retained, fast-response...

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Briefs: Robotics, Automation & Control
Lunar Regolith Simulant Sample Collection Mechanism for Remote Operation in a Thermal Vacuum Chamber

The Sample Capture Mechanism (SCM) is a remotely actuated, spring-driven mechanism designed to remotely capture and seal a 15-mL sample in less than 1 second. It was used to capture a 10-g sample of simulated regolith dispensed from a drill in a...

Briefs: Robotics, Automation & Control
Vessel Sealing Device for Robotic Devices

Invasive surgical procedures are essential for addressing various medical conditions. When possible, minimally invasive procedures are preferred, but these technologies are often limited in scope and complexity. These limitations are due in part to mobility restrictions from the use of rigid tools in...

Briefs: Mechanical & Fluid Systems
Process for Forming a High-Temperature Single Crystal Preloader

Friction has long been a thorny problem for sealing-device designers. Traditional sealing devices rely on a contacting relationship between surfaces and sealing elements to prevent fluid leakage, but in the case of moving elements, this contact produces friction that causes wearing...

Briefs: Test & Measurement

NASA’s Marshall Space Flight Center has developed a set of unique magnetostrictive (MS) technologies for utilization in pressure regulation and valve systems. By combining MS-based sensors with a...

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Briefs: Manufacturing & Prototyping
Connection and Repair Techniques for Capillary Tubing in Restrictive Areas and Gas Chromatography Applications

Capillary columns offer challenges in gas chromatography (GC) work due to their small size and fragile nature. Typical repair techniques to join two capillary columns require cumbersome metal fittings. This solution is not applicable in...

Briefs: Test & Measurement
Hermetic Seal Leak Detection Apparatus with Variable Size Test Chamber

NASA’s Marshall Space Flight Center has developed a unique apparatus ideal for use in nondestructive testing (NDT) of hermetic seals of containers or instrumentation. The device is capable of detecting both large and small leaks and can be calibrated to characterize the...

Briefs: Robotics, Automation & Control

NASA’s Kennedy Space Center has developed a novel ruggedized housing for an electrical or fluid umbilical connector that prevents intrusion of dust, sand, dirt, mud, and moisture during field use under harsh...

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Briefs: Test & Measurement
Fusible Alloy Thermometer

This work was based on the need for a relatively small passive detector of maximum temperature reached by an object that can be visually inspected. The device requirements are to be hermetically sealed for contamination control, give a clear indication of maximum temperature achieved (non-reversible) with a ~10 °C...

Briefs: Mechanical & Fluid Systems
Advanced Magnetostrictive Regulator, Valve, and Force-to-Angle Sensor

Typical aerospace rocket engines use valves to control the flow and pressures of propellant and pressurants. These typical valves are designed to operate with a mechanical, electromechanical, or pneumatic operator. They all have at least one, and often multiple, penetrations...

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