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 6105-01-533-8230
NSN 6620-00-951-0153
NSN 5855-01-066-2882
NSN 5855-00-079-2370
NSN 2925-00-947-9814
NSN 5960-01-599-9821
NSN 2925-01-209-9245
NSN 5990-01-489-0366
NSN 6150-00-023-4968
NSN 5835-00-051-9092
NSN 5920-00-151-4039
NSN 5930-00-646-2140