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 5985-00-100-0140
NSN 5915-00-376-9388
NSN 5985-01-348-1280
NSN 5935-01-149-1206
NSN 6620-01-097-1038
NSN 5950-01-438-2731
NSN 5920-00-140-8912
NSN 5945-01-035-7488
NSN 5930-01-294-7550
NSN 6105-01-398-7495
NSN 5855-01-195-2518
NSN 6240-01-168-6185