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 6150-01-540-1617
NSN 6105-00-251-7127
NSN 5935-00-976-4811
NSN 5985-00-816-0672
NSN 7035-01-049-6776
NSN 6645-01-400-1137
NSN 5935-01-589-5475
NSN 6645-01-370-5264
NSN 6220-00-728-4559
NSN 5835-01-193-6192
NSN 5990-01-330-4552
NSN 4140-01-123-9149