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 5990-00-518-3195
NSN 5835-01-216-7289
NSN 5998-01-501-5114
NSN 2925-00-113-6146
NSN 6650-00-367-9230
NSN 6620-01-305-4982
NSN 5905-00-823-1844
NSN 5960-01-499-7172
NSN 6240-01-469-1925
NSN 5855-00-797-8217
NSN 5975-00-822-2889
NSN 6150-01-302-1655