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 5920-01-200-6655
NSN 6240-01-273-0193
NSN 6685-01-280-1257
NSN 5975-00-116-0803
NSN 4140-01-470-8518
NSN 6320-00-572-5753
NSN 5965-00-067-6780
NSN 5835-00-917-7344
NSN 6145-01-277-2714
NSN 5895-01-496-1573
NSN 2925-01-026-1000
NSN 5935-01-085-8269