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 4140-00-951-3093
NSN 5895-00-544-5789
NSN 5996-00-072-9944
NSN 6130-01-351-8870
NSN 7035-01-584-1350
NSN 6150-00-164-8900
NSN 7035-00-111-4389
NSN 7035-00-009-8705
NSN 5998-01-630-8428
NSN 6610-01-415-1623
NSN 6105-00-920-8655
NSN 6110-01-380-4380