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 5930-00-407-7036
NSN 5835-00-825-2512
NSN 5920-01-443-3771
NSN 5965-01-261-9508
NSN 5910-01-620-3237
NSN 6620-00-299-2530
NSN 5950-00-529-0264
NSN 5999-01-446-1932
NSN 5925-00-597-1558
NSN 5910-00-482-8705
NSN 6130-01-092-5387
NSN 6145-01-072-3352