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 4140-01-453-8697
NSN 6650-01-337-0657
NSN 6150-00-834-0537
NSN 5925-01-182-1220
NSN 5895-01-545-9631
NSN 5999-00-949-6571
NSN 6130-01-017-9496
NSN 5930-01-537-2371
NSN 6620-01-401-5356
NSN 6130-01-004-8977
NSN 5960-01-378-1729
NSN 5996-00-928-9967