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 5905-01-014-4221
NSN 5999-01-074-0918
NSN 2925-01-224-1885
NSN 6110-00-239-9248
NSN 6650-01-633-9147
NSN 6220-01-152-3346
NSN 6620-00-852-5353
NSN 6110-00-211-7435
NSN 5998-01-376-3644
NSN 5930-01-509-6811
NSN 5985-01-532-6513
NSN 5965-01-231-0261