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 5996-00-991-9532
NSN 5910-01-166-4047
NSN 6320-00-553-8427
NSN 5920-01-477-9261
NSN 5910-01-613-8350
NSN 6135-01-440-9412
NSN 4140-01-649-0939
NSN 6110-00-489-1177
NSN 6145-01-659-2188
NSN 5999-01-262-5938
NSN 5910-01-241-9739
NSN 2925-01-513-9114