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 5960-01-399-4327
NSN 5925-00-499-9220
NSN 5960-00-116-1965
NSN 5855-01-491-4623
NSN 5835-00-876-4544
NSN 5965-01-021-1356
NSN 6685-01-014-5336
NSN 6150-00-109-6565
NSN 2925-01-615-9859
NSN 6650-01-589-3585
NSN 6110-01-203-4396
NSN 6110-01-604-9233