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 4140-01-282-1339
NSN 6110-01-108-2690
NSN 2925-01-098-9549
NSN 6110-01-556-1224
NSN 5935-01-294-0051
NSN 6620-01-145-1278
NSN 5925-01-246-9620
NSN 6650-00-583-1735
NSN 5920-01-295-1268
NSN 2925-00-051-1467
NSN 5910-01-291-3492
NSN 6145-01-320-7264