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 6650-01-136-5230
NSN 6685-01-456-3717
NSN 5855-00-118-8762
NSN 5835-00-794-7500
NSN 6610-00-337-9874
NSN 5945-01-449-1893
NSN 5960-01-437-7422
NSN 5985-01-207-7883
NSN 5930-00-469-3480
NSN 6220-01-592-2277
NSN 6645-01-500-0827
NSN 6645-01-507-0208