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 5950-01-324-1131
NSN 5920-01-419-0741
NSN 5835-01-213-0833
NSN 6135-01-196-7399
NSN 5985-01-476-7521
NSN 5985-01-644-3789
NSN 5945-00-374-1691
NSN 6110-01-153-7232
NSN 5910-01-584-4216
NSN 6150-00-858-3672
NSN 5920-00-212-4387
NSN 5990-01-369-3380