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 5990-01-504-9265
NSN 5905-00-007-7664
NSN 5915-00-518-1644
NSN 6220-01-577-3999
NSN 6130-01-607-5838
NSN 4140-00-307-2732
NSN 6240-01-656-4920
NSN 6150-01-155-2215
NSN 5905-00-719-3924
NSN 6610-00-862-5901
NSN 5945-01-539-1076
NSN 5905-01-644-3045