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 4140-01-199-7432
NSN 5930-00-494-7776
NSN 5960-01-260-7430
NSN 5925-01-440-9364
NSN 2925-01-058-1718
NSN 6240-01-381-5541
NSN 5999-00-488-3452
NSN 6145-00-968-4439
NSN 5965-00-042-5433
NSN 5855-00-455-6070
NSN 4140-01-583-2106
NSN 5945-00-878-9075