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 5915-00-045-9071
NSN 5999-00-232-3943
NSN 5965-01-481-4164
NSN 5990-00-539-7859
NSN 6610-00-524-0724
NSN 5975-01-044-8950
NSN 5920-00-469-5154
NSN 5985-01-376-4876
NSN 6130-01-179-5128
NSN 6620-00-827-1611
NSN 6220-00-233-7436
NSN 5999-01-267-0255