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 6110-01-596-7719
NSN 5895-00-643-3980
NSN 5996-01-099-2841
NSN 6105-01-250-6622
NSN 5975-00-984-5793
NSN 6135-00-209-6918
NSN 5855-01-207-5616
NSN 6320-00-139-1090
NSN 6610-00-518-4919
NSN 6320-00-731-6134
NSN 4140-01-314-0575
NSN 6220-01-027-1294