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 6135-00-686-4777
NSN 5960-01-567-1096
NSN 5985-00-118-2913
NSN 5998-01-055-6043
NSN 5910-01-593-6347
NSN 5975-01-494-1993
NSN 6110-00-066-9614
NSN 5910-01-306-2346
NSN 5996-01-368-6730
NSN 6220-00-967-8382
NSN 5975-01-472-2389
NSN 6610-00-456-0485