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 5920-00-158-5391
NSN 6240-01-645-2228
NSN 5855-01-320-7640
NSN 5998-00-225-8522
NSN 6130-01-578-2209
NSN 7035-00-286-6221
NSN 5915-00-970-1419
NSN 5925-00-570-4771
NSN 2925-00-132-1280
NSN 6645-01-447-2446
NSN 6130-00-222-9206
NSN 5945-01-223-0482