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 6240-01-444-1673
NSN 5945-01-116-3606
NSN 6220-00-208-9058
NSN 6645-01-534-5545
NSN 5950-01-042-0153
NSN 6645-01-327-7362
NSN 5835-01-535-0948
NSN 5925-01-634-0664
NSN 6620-01-283-6961
NSN 5920-01-610-5936
NSN 5965-00-973-9974
NSN 5985-00-682-0842