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 6240-01-588-2868
NSN 5925-01-619-4407
NSN 5935-01-414-4350
NSN 5998-01-568-0302
NSN 5910-01-441-9552
NSN 6110-00-130-5342
NSN 5999-01-466-2961
NSN 6150-00-468-1885
NSN 6145-01-014-4428
NSN 6135-01-431-6801
NSN 5990-01-492-6575
NSN 5855-01-272-3660