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 5965-01-568-8031
NSN 5990-00-076-6111
NSN 5960-01-418-2641
NSN 5915-01-195-3439
NSN 5835-01-286-6499
NSN 6105-00-796-2905
NSN 5999-01-490-1779
NSN 5996-01-450-1743
NSN 6645-00-567-4562
NSN 5920-00-058-9347
NSN 5965-01-292-7062
NSN 6320-01-317-7312