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 6135-00-375-6861
NSN 5990-01-175-2360
NSN 4140-01-597-2929
NSN 6240-01-272-4037
NSN 6685-00-777-5731
NSN 6150-01-508-1826
NSN 5920-01-560-8580
NSN 5965-01-382-4863
NSN 6150-01-575-4055
NSN 5990-00-067-6791
NSN 5998-01-303-8378
NSN 5999-01-361-8950