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 6220-00-334-7008
NSN 5985-01-447-6038
NSN 5999-01-445-6085
NSN 5998-01-042-4108
NSN 5975-00-353-5589
NSN 6610-01-409-1781
NSN 6650-01-484-5014
NSN 5910-01-313-6582
NSN 6320-01-457-2805
NSN 5920-01-459-2299
NSN 6620-00-977-3779
NSN 6610-01-359-0008