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 6150-01-188-5048
NSN 6130-01-633-9442
NSN 4140-01-027-1871
NSN 5945-01-388-1175
NSN 5935-00-764-1107
NSN 5925-01-461-3594
NSN 2925-01-339-6972
NSN 6320-01-176-8367
NSN 6685-01-133-8320
NSN 6130-01-347-0867
NSN 6145-01-397-1793
NSN 6650-01-013-0667