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 5910-01-424-0225
NSN 5905-01-512-1354
NSN 6130-01-400-6123
NSN 6620-01-633-8443
NSN 4140-01-463-7952
NSN 6145-01-234-6615
NSN 5985-01-167-3425
NSN 7035-01-423-5863
NSN 5935-01-491-0093
NSN 5999-01-293-9829
NSN 5945-01-353-3852
NSN 5999-00-866-9763