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 6105-01-218-5211
NSN 6130-00-705-7953
NSN 5975-01-189-1360
NSN 6145-01-316-4050
NSN 5910-01-069-6038
NSN 5945-00-491-6612
NSN 5985-01-615-2365
NSN 6220-01-067-6690
NSN 5835-01-203-8295
NSN 6135-00-628-1142
NSN 5905-01-480-3777
NSN 5905-01-551-2064