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 5990-01-421-3325
NSN 5915-00-480-5163
NSN 5945-00-887-7658
NSN 6135-00-299-6918
NSN 5855-01-342-9778
NSN 2925-00-463-7319
NSN 5930-00-322-2489
NSN 6220-00-285-8104
NSN 5950-00-516-5379
NSN 6145-01-348-6225
NSN 5965-00-905-7561
NSN 6610-01-538-4660