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 6105-01-382-1105
NSN 5920-01-571-8027
NSN 5998-00-905-6772
NSN 5935-01-053-7659
NSN 5965-00-856-0552
NSN 5930-00-929-1635
NSN 6620-01-456-0529
NSN 5925-01-102-9877
NSN 4140-01-646-1182
NSN 5998-01-363-7229
NSN 5975-00-126-5724
NSN 5895-01-249-6305