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 5930-00-567-5343
NSN 6145-01-186-5591
NSN 5935-01-426-8969
NSN 6645-01-025-1002
NSN 6620-00-404-0149
NSN 5999-00-924-9112
NSN 6105-00-056-2785
NSN 4140-00-704-7615
NSN 5895-00-177-3610
NSN 6145-01-448-9332
NSN 5990-00-084-3776
NSN 5945-00-618-4761