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 5998-01-125-7451
NSN 5965-01-213-0338
NSN 5915-00-315-3583
NSN 6645-00-570-8472
NSN 5975-01-413-1741
NSN 5996-01-246-0078
NSN 6145-01-374-1899
NSN 6610-01-212-9817
NSN 6135-01-332-0431
NSN 5905-01-086-4887
NSN 7035-00-543-3272
NSN 6620-00-707-4195