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 5910-01-454-8443
NSN 5930-00-072-5979
NSN 6650-00-492-9503
NSN 5920-01-617-1496
NSN 5950-01-074-1819
NSN 5965-01-229-0786
NSN 6145-00-905-7255
NSN 5975-00-840-5844
NSN 5960-00-248-3094
NSN 5996-01-253-8676
NSN 5950-00-517-0467
NSN 2925-01-146-0278