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 5920-00-045-4211
NSN 5998-00-906-6738
NSN 5965-01-073-6047
NSN 5905-01-652-5563
NSN 5855-01-472-8320
NSN 6145-01-229-4136
NSN 5950-01-086-9237
NSN 5985-01-158-8447
NSN 7035-01-202-8172
NSN 6645-01-512-6760
NSN 6685-01-268-8218
NSN 5855-01-162-5251