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 6320-01-476-7702
NSN 5895-01-123-9027
NSN 5990-00-099-0822
NSN 6135-00-944-6953
NSN 6105-01-107-4077
NSN 5985-00-059-9386
NSN 5999-01-653-4921
NSN 4140-01-500-3107
NSN 6645-01-367-2581
NSN 6685-01-188-7379
NSN 5985-01-156-6090
NSN 6145-01-388-4127