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 5915-00-169-6845
NSN 6130-00-554-3691
NSN 5855-01-588-4758
NSN 6150-00-621-2570
NSN 6150-01-599-0544
NSN 6220-00-561-7589
NSN 5910-01-472-4227
NSN 6110-01-576-8618
NSN 5996-01-564-0725
NSN 5935-01-187-7345
NSN 5975-01-429-8205
NSN 5835-01-455-3380