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 6685-01-173-5618
NSN 6650-01-261-0088
NSN 5920-00-549-2203
NSN 5915-01-184-6270
NSN 6105-01-437-8875
NSN 6240-01-461-8193
NSN 5915-01-092-9460
NSN 6130-00-929-6699
NSN 5998-01-037-2429
NSN 5910-00-753-2850
NSN 6135-00-078-9931
NSN 2925-01-312-9502