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 6645-01-419-0471
NSN 6220-01-286-4249
NSN 6135-01-540-5253
NSN 6685-00-121-3346
NSN 5945-00-144-8073
NSN 5965-00-351-7460
NSN 5985-01-229-4751
NSN 5945-00-067-6677
NSN 5925-01-274-2263
NSN 6320-01-361-7467
NSN 6110-01-056-9890
NSN 6110-00-052-2655