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 5999-00-236-6173
NSN 5965-01-360-0454
NSN 5999-01-395-0062
NSN 6220-00-902-7328
NSN 5910-01-393-7274
NSN 5910-00-437-3647
NSN 5915-01-388-2183
NSN 5835-01-030-2519
NSN 4140-01-388-8879
NSN 5990-01-352-5255
NSN 5999-00-436-6403
NSN 5945-00-167-0630