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 6130-00-737-0459
NSN 6150-01-452-3557
NSN 6320-01-313-8306
NSN 6645-01-564-8610
NSN 6220-00-204-5538
NSN 2925-00-459-4519
NSN 5935-01-352-8320
NSN 4140-01-065-1884
NSN 7035-00-185-8683
NSN 6105-00-880-3339
NSN 5920-00-468-3074
NSN 4140-01-435-6540