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 5975-01-568-3518
NSN 5945-00-356-3007
NSN 6130-01-144-3589
NSN 6135-01-472-9011
NSN 5835-00-269-2232
NSN 5999-01-261-9138
NSN 5915-00-540-8350
NSN 6240-01-164-9175
NSN 5996-01-355-8420
NSN 5998-01-355-8170
NSN 7035-00-371-7749
NSN 5996-01-181-5438