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 5998-01-251-1263
NSN 5895-01-174-2462
NSN 5910-01-197-5922
NSN 6320-01-215-1133
NSN 6220-00-306-7239
NSN 5998-01-104-4262
NSN 6145-00-248-8965
NSN 6220-00-269-8396
NSN 6135-01-508-6083
NSN 6650-00-229-3790
NSN 5998-01-033-4058
NSN 7035-01-144-6408