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 6685-00-091-9378
NSN 4140-00-940-8297
NSN 6105-01-106-6355
NSN 5999-00-068-0712
NSN 5930-01-100-3343
NSN 5920-01-585-4209
NSN 5910-01-551-1268
NSN 5895-00-191-2146
NSN 5895-01-578-4332
NSN 7035-01-300-8409
NSN 5930-01-112-0487
NSN 5998-01-056-2797