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 5990-00-187-5249
NSN 5960-01-061-6216
NSN 5915-01-335-1947
NSN 5965-01-521-4452
NSN 5990-01-443-2931
NSN 5998-00-483-4714
NSN 5960-00-848-1900
NSN 5945-00-419-2600
NSN 5915-00-930-4438
NSN 5915-01-660-1336
NSN 6220-00-378-1484
NSN 5835-01-461-8184