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 5895-01-117-0349
NSN 6610-00-999-9177
NSN 5975-01-131-9493
NSN 5910-00-156-7293
NSN 5965-00-217-2476
NSN 5855-00-688-9954
NSN 6240-00-079-1759
NSN 5925-01-509-7873
NSN 5945-01-422-9969
NSN 5910-00-478-9196
NSN 6645-00-876-4413
NSN 5998-01-521-3872