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 6130-01-242-9778
NSN 5985-01-242-6218
NSN 5855-01-423-1497
NSN 5835-00-198-4936
NSN 6220-01-473-2116
NSN 5950-00-249-1674
NSN 6650-01-211-9642
NSN 5930-00-070-6385
NSN 6145-01-562-6644
NSN 6685-01-399-8584
NSN 6320-01-160-8578
NSN 6130-00-782-0353