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 5985-01-309-8248
NSN 2925-01-089-6269
NSN 6620-00-810-6774
NSN 6150-00-413-1311
NSN 5935-00-952-1720
NSN 6645-01-108-0799
NSN 5960-00-067-9364
NSN 5915-01-608-4053
NSN 5910-01-561-9200
NSN 6110-00-075-5660
NSN 4140-01-566-6614
NSN 5990-01-017-9861