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 6620-00-180-9061
NSN 5985-01-609-8900
NSN 5975-01-454-3682
NSN 7035-01-633-9537
NSN 6650-01-549-8478
NSN 5835-00-905-7165
NSN 5990-01-628-8188
NSN 6105-00-496-0198
NSN 6150-00-188-2958
NSN 5905-01-090-0447
NSN 5996-01-628-8624
NSN 5975-00-448-2161