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 5960-01-381-2478
NSN 5975-01-211-8720
NSN 5998-01-599-2180
NSN 6320-01-170-0708
NSN 6135-01-437-9178
NSN 5998-01-027-1161
NSN 6110-01-014-2141
NSN 5835-01-480-3484
NSN 5835-01-120-8829
NSN 5960-01-641-5493
NSN 5935-01-323-3695
NSN 5895-00-596-8678