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 6650-01-102-5171
NSN 5935-01-204-0581
NSN 6220-00-371-3267
NSN 6135-00-921-6487
NSN 6685-00-134-7733
NSN 5835-01-075-8473
NSN 5910-01-475-4851
NSN 6620-00-796-5666
NSN 5985-00-740-7154
NSN 5999-01-164-7987
NSN 5930-01-154-3586
NSN 2925-01-100-3694