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 5996-00-719-9816
NSN 5975-01-101-0466
NSN 6105-00-629-0967
NSN 6105-01-378-6431
NSN 5999-00-204-9990
NSN 6320-01-476-7702
NSN 5960-01-543-0235
NSN 5905-01-389-2296
NSN 5925-01-141-7973
NSN 5965-00-836-2690
NSN 6650-01-576-6512
NSN 5905-01-342-4159