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 6145-01-442-3511
NSN 5835-00-494-8419
NSN 5945-00-933-3047
NSN 5920-01-649-1420
NSN 7035-01-429-0431
NSN 6320-01-150-5378
NSN 5930-01-292-7553
NSN 6130-01-062-1640
NSN 5999-00-583-7949
NSN 5975-01-623-6346
NSN 5965-00-076-9561
NSN 6240-01-069-6393