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 4140-01-295-8264
NSN 5925-01-262-2893
NSN 5895-01-535-1395
NSN 5925-00-249-1287
NSN 6145-01-522-5221
NSN 6110-00-775-0745
NSN 5915-00-258-0031
NSN 5990-01-576-4383
NSN 6130-01-190-5470
NSN 6320-00-456-0836
NSN 6650-01-338-9998
NSN 6110-01-354-2885