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 5930-01-565-8561
NSN 5925-01-063-6247
NSN 2925-01-328-4394
NSN 6130-01-486-3574
NSN 6105-01-559-0176
NSN 5999-01-437-9404
NSN 6110-00-905-6148
NSN 6650-01-462-5879
NSN 6110-01-519-8949
NSN 6645-01-480-3962
NSN 6220-01-398-7372
NSN 5998-01-576-9723