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 6145-00-539-9799
NSN 6105-01-493-8948
NSN 6610-01-422-9508
NSN 6650-00-620-0212
NSN 5905-01-230-8487
NSN 5945-01-583-7340
NSN 5920-01-033-0449
NSN 6145-01-137-7321
NSN 5915-00-068-9702
NSN 6650-01-371-3551
NSN 5998-01-168-1366
NSN 5999-01-174-1768