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 6150-00-761-3316
NSN 6220-00-470-6828
NSN 5945-00-258-8507
NSN 6110-00-418-9363
NSN 5950-01-450-9615
NSN 6620-00-864-1120
NSN 5920-01-131-4374
NSN 4140-00-567-9291
NSN 5990-01-591-8797
NSN 6130-00-643-4894
NSN 6220-01-425-1588
NSN 5905-00-839-6702