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 2925-01-386-7392
NSN 6105-01-162-4484
NSN 6620-01-133-4193
NSN 5975-01-568-7356
NSN 5998-01-256-1629
NSN 5855-00-763-2155
NSN 6685-01-537-6314
NSN 6130-01-477-9912
NSN 5895-00-411-4023
NSN 5975-00-401-3707
NSN 5930-00-846-8970
NSN 6650-01-290-4001