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 6220-01-240-1108
NSN 6110-01-308-0049
NSN 6320-00-643-0958
NSN 5975-01-208-6233
NSN 5985-01-459-1637
NSN 5950-01-200-7281
NSN 4140-01-255-6966
NSN 5975-01-406-3395
NSN 6620-01-194-2626
NSN 5920-00-246-5992
NSN 5945-00-105-8267
NSN 5930-01-329-2760