A circular shaped item with an aperture manufactured to predetermined dimensions and designed for use as a seal in stuffing boxes, packing nuts, and the like. It may be (1) any nonmetallic molded or formed ring (except solid (without joint) rings having a square or rectangular cross section); or (2) any shredded metal or metal foil type metallic or semimetallic rings. Excludes felt items but includes multimaterial items in which one of the materials is felt. For solid (without joints) nonmetallic items with a square or rectangular cross section, see washer (as modified) and gasket. For rubber items specifically designed for weather-proofing doors, windows, chests, and the like see seal, nonmetallic angle; seal, nonmetallic channel; and seal, nonmetallic, special shaped section. For circular (with aperature) nonmetallic items with a solid round cross-section see o-ring. Excludes cup, compression; gasket; washer (as modified); and felt, mechanical, preformed.
Classification: Gaskets,washers & other seals
NSN 5915-01-009-8422
NSN 5895-01-451-0035
NSN 5998-00-888-0061
NSN 5960-01-178-3845
NSN 4140-01-053-5359
NSN 6145-01-164-2380
NSN 5945-00-213-0101
NSN 5960-00-297-7099
NSN 6105-01-019-8008
NSN 6620-00-907-2670
NSN 5920-01-181-3502
NSN 6240-01-035-8525