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 6240-01-364-8696
NSN 6135-01-331-9579
NSN 6105-00-138-9265
NSN 4140-01-378-1032
NSN 5990-01-472-2447
NSN 5920-00-513-4546
NSN 5930-01-286-7080
NSN 5905-00-138-6348
NSN 6650-01-500-2594
NSN 5965-00-918-3950
NSN 5975-01-091-5505
NSN 6320-01-384-3850