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 5930-00-370-3161
NSN 5990-01-277-2118
NSN 6135-00-437-5182
NSN 5915-00-726-9753
NSN 4140-01-503-3558
NSN 5998-01-586-2306
NSN 5905-01-512-8230
NSN 5965-00-679-9501
NSN 5915-01-660-2413
NSN 6610-01-060-7626
NSN 5910-01-577-6655
NSN 6130-01-492-4527