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 5960-01-351-5074
NSN 5920-01-109-9598
NSN 6650-00-692-1541
NSN 5930-01-113-8011
NSN 5990-00-284-0537
NSN 5975-01-467-4287
NSN 6110-01-423-1094
NSN 5990-01-625-5923
NSN 5905-01-491-1584
NSN 7035-01-413-6697
NSN 5855-00-100-9003
NSN 6610-01-028-7651