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 5960-01-029-4253
NSN 6320-01-583-5987
NSN 6650-01-211-9099
NSN 6610-01-433-2219
NSN 5998-00-103-2723
NSN 6110-01-194-8318
NSN 5910-00-370-2257
NSN 6650-00-981-9501
NSN 5920-00-427-7267
NSN 7035-00-153-3826
NSN 5990-01-423-2219
NSN 5985-01-478-9740