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 5998-00-835-3147
NSN 2925-01-106-8871
NSN 6130-00-370-9172
NSN 6240-01-269-3146
NSN 6150-00-342-5058
NSN 5975-00-269-8391
NSN 6645-00-351-8580
NSN 6620-01-024-6073
NSN 7035-00-803-3056
NSN 6620-00-942-1751
NSN 6240-01-528-7108
NSN 5965-01-460-4172