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 6220-01-575-9225
NSN 6685-01-649-8836
NSN 6110-00-363-3974
NSN 5895-00-719-5864
NSN 6240-01-400-0570
NSN 5990-01-424-2954
NSN 6110-00-970-8656
NSN 6610-01-455-3716
NSN 5960-01-033-8015
NSN 4140-01-533-6282
NSN 5935-01-346-1721
NSN 5975-01-473-2767