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 6240-00-999-7806
NSN 6650-00-989-1103
NSN 6105-01-406-7510
NSN 4140-00-283-6843
NSN 6650-01-520-4765
NSN 5990-00-562-8413
NSN 5935-01-392-0860
NSN 6220-01-459-8668
NSN 2925-01-553-5132
NSN 5985-01-494-4048
NSN 5945-00-666-4235
NSN 5930-00-100-0163