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 5985-01-285-0589
NSN 5990-01-184-6830
NSN 6610-00-825-5774
NSN 6650-01-629-9480
NSN 5975-00-103-2814
NSN 5835-00-912-5656
NSN 5920-01-012-9926
NSN 6110-01-570-9375
NSN 5915-01-577-4016
NSN 5965-01-273-3055
NSN 5925-00-921-1171
NSN 6320-01-513-9166