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 5998-01-429-9322
NSN 5998-01-483-8803
NSN 5945-01-171-0130
NSN 5996-00-106-1064
NSN 5965-01-567-7984
NSN 6685-01-381-0759
NSN 4140-01-546-9695
NSN 4140-01-410-7626
NSN 6320-00-174-1362
NSN 5905-01-463-3144
NSN 6145-01-522-2169
NSN 6620-00-505-5031