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 2925-01-004-1683
NSN 6220-01-528-9438
NSN 5905-01-391-2550
NSN 6610-01-447-2560
NSN 5999-01-239-9690
NSN 5998-01-258-5928
NSN 5975-01-564-7075
NSN 6320-00-504-1214
NSN 6685-01-463-7229
NSN 6145-01-596-7027
NSN 6110-01-113-7642
NSN 6685-01-464-0244