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 4140-01-443-3806
NSN 6110-01-391-2710
NSN 5925-00-172-5070
NSN 6105-01-290-2068
NSN 5985-01-135-2819
NSN 2925-01-205-4584
NSN 5975-00-188-1164
NSN 5910-00-081-2215
NSN 5915-01-456-5374
NSN 5985-01-041-3769
NSN 5905-01-557-5395
NSN 5965-01-448-2697