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 4140-01-058-6602
NSN 5990-00-057-6348
NSN 5996-00-477-6603
NSN 6320-01-592-6248
NSN 5910-00-998-2694
NSN 6240-00-899-6990
NSN 6645-01-201-5802
NSN 6240-01-163-2813
NSN 6145-01-590-1029
NSN 6130-01-273-4287
NSN 6320-00-831-2227
NSN 5915-01-100-2511