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 5930-00-172-0861
NSN 5960-01-457-0157
NSN 6145-01-054-3874
NSN 5915-01-216-1037
NSN 6135-01-466-3980
NSN 5985-01-441-8471
NSN 6220-01-343-5585
NSN 5975-00-186-3968
NSN 5945-01-464-9650
NSN 5945-00-233-6435
NSN 5960-01-196-8878
NSN 5985-00-269-5388