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 6685-00-600-3808
NSN 7035-01-408-3699
NSN 5835-01-190-0482
NSN 5930-01-114-0695
NSN 5855-01-397-6300
NSN 6320-01-388-1067
NSN 5975-01-165-2035
NSN 5855-01-366-2429
NSN 6130-01-420-5802
NSN 5925-01-075-9491
NSN 5920-01-644-3526
NSN 6130-01-424-6070