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 6650-01-221-5367
NSN 5905-01-120-7736
NSN 5905-01-338-1959
NSN 5996-01-390-4028
NSN 6150-00-997-4571
NSN 6610-01-618-4746
NSN 6130-01-634-0603
NSN 5999-01-056-4145
NSN 6110-01-633-8045
NSN 6240-01-409-2465
NSN 6150-00-826-8149
NSN 2925-01-196-2904