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 5985-00-021-2331
NSN 6610-00-825-5774
NSN 5990-00-801-7923
NSN 5930-01-227-8389
NSN 6150-01-408-4662
NSN 6135-01-431-6801
NSN 5945-01-012-6654
NSN 5905-01-524-4330
NSN 5905-01-351-2502
NSN 5990-01-525-2250
NSN 5925-01-242-9945
NSN 5910-00-150-8653