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 5990-01-386-5561
NSN 5950-01-273-0762
NSN 6145-01-232-2413
NSN 2925-01-502-9903
NSN 6610-00-681-0590
NSN 6645-01-068-3042
NSN 7035-01-122-1264
NSN 5915-01-323-1481
NSN 5835-01-307-8954
NSN 7035-00-093-5840
NSN 5985-01-339-0127
NSN 6650-01-495-1269