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 4140-01-148-2815
NSN 5950-01-078-6497
NSN 6135-01-361-1776
NSN 6150-01-618-5371
NSN 5999-00-450-0089
NSN 5998-01-193-1862
NSN 6240-01-597-8430
NSN 6150-01-222-6990
NSN 5925-00-147-7452
NSN 6145-01-442-7395
NSN 5930-00-292-1089
NSN 6110-01-521-6465