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 5925-01-589-0212
NSN 5945-01-322-5561
NSN 5998-00-657-4768
NSN 4140-01-100-4652
NSN 5996-00-787-7271
NSN 5930-00-244-6927
NSN 6110-01-531-5393
NSN 6220-00-908-1232
NSN 5999-00-893-9466
NSN 5990-01-316-6344
NSN 4140-01-442-0204
NSN 5930-01-454-8267