9A006

Cryogenic refrigerators, flightweight dewars, cryogenic heat pipes or cryogenic systems, designed to restrict cryogenic fluid losses to less than 30% per year;

Cryogenic containers or closed-cycle refrigeration systems, designed to maintain or produce temperatures less than or equal to 100 K (-173.15°C);

Slush hydrogen storage or transfer systems;

High pressure (exceeding 17.5 MPa) turbo pumps, pump components or their associated gas generator or expander cycle turbine drive systems;

High-pressure (exceeding 10.6 MPa) thrust chambers and nozzles therefor;

Propellant storage systems using the principle of capillary containment or positive expulsion (i.e., with flexible bladders);

Liquid propellant injectors with individual orifices of 0.381 mm or smaller in diameter (an area of 1.14 x 10-3 cm2 or smaller for non-circular orifices) and specially designed for liquid rocket engines;

One-piece carbon-carbon thrust chambers or one-piece carbon-carbon exit cones, with densities exceeding 1.4 g/cm3 and tensile strengths exceeding 48 MPa.