A thin, circular, metallic or nonmetallic item with a flat or prebulged cross-sectional shape, designed to rupture at a predetermined pressure to prevent damage to hydraulic or pneumatic systems, or the like. It may include multiple pieces, such as a retainer ring, disk and vacuum support. It can be used independently or as a component part of a head, safety, pressure relief. For items furnished with a holder, see head and disk, safety, pressure relief. For items without a rupture pressure rating, see disk, solid, plain. Excludes diaphragm, valve, flat; diaphragm, valve, special shaped; disk, valve; and insulator, disk.
Classification: Parts of taps, cocks, valves and similar appliances, nesoi
NSN 5990-01-124-9063
NSN 6130-01-258-7046
NSN 5985-01-382-9979
NSN 6150-01-209-5219
NSN 6620-00-975-5159
NSN 5905-00-450-6332
NSN 6685-01-445-6201
NSN 5930-01-020-8942
NSN 6645-01-197-9090
NSN 5915-01-267-2822
NSN 5910-01-198-8811
NSN 6650-01-450-6335