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 5990-01-024-9659
NSN 6620-00-233-6839
NSN 6645-00-095-6956
NSN 6620-01-616-3303
NSN 5905-01-616-6841
NSN 5935-01-329-0033
NSN 5998-01-144-3066
NSN 6145-01-136-8517
NSN 6620-01-551-7071
NSN 6645-01-552-4570
NSN 6220-00-880-7806
NSN 5920-00-526-9238