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 7035-00-557-5570
NSN 5990-00-212-4316
NSN 5910-00-555-3003
NSN 6610-01-452-2477
NSN 5960-00-517-9359
NSN 6240-01-297-6165
NSN 6650-00-469-2218
NSN 5935-00-737-1268
NSN 6645-01-487-6282
NSN 5930-01-496-4483
NSN 5920-01-105-4506
NSN 6130-01-462-0662