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 5990-00-948-1469
NSN 5930-01-556-8045
NSN 4140-01-595-0741
NSN 5910-01-396-1151
NSN 5905-01-547-0054
NSN 5925-00-081-9135
NSN 6220-01-188-6962
NSN 5945-00-023-8592
NSN 6645-01-105-4647
NSN 6645-01-609-4753
NSN 5895-00-646-5568
NSN 6110-01-186-0579