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 5930-00-552-6920
NSN 6650-01-434-6434
NSN 5835-01-392-3105
NSN 5990-00-249-7887
NSN 6135-01-468-6491
NSN 6645-00-084-3859
NSN 5965-00-452-0967
NSN 5999-01-508-1794
NSN 5920-01-314-6341
NSN 5965-01-010-1258
NSN 5975-01-176-3615
NSN 6240-01-283-0404