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 5960-01-170-4057
NSN 6145-01-289-6199
NSN 6130-00-249-9649
NSN 6110-01-398-1507
NSN 5915-00-740-4336
NSN 6650-01-210-9004
NSN 5930-01-386-4446
NSN 5930-01-374-0116
NSN 5855-00-361-0167
NSN 5990-01-632-0969
NSN 5855-00-762-4833
NSN 5965-01-128-7785