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 6110-01-368-7130
NSN 5998-00-813-5393
NSN 6145-01-294-6836
NSN 6645-01-408-6568
NSN 6610-01-482-3173
NSN 5999-00-221-4615
NSN 6685-00-155-4301
NSN 5835-01-123-8305
NSN 5945-01-076-4801
NSN 5990-01-124-4291
NSN 5990-00-116-6590
NSN 5920-00-034-0940