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 6130-01-314-7781
NSN 6145-01-246-1858
NSN 6650-00-170-5095
NSN 5930-01-414-4757
NSN 5998-01-425-8863
NSN 6620-00-900-3986
NSN 4140-01-291-9342
NSN 6110-01-592-2427
NSN 5895-00-709-2617
NSN 5990-01-432-4249
NSN 5990-01-369-6915
NSN 5990-01-050-7535