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 5999-00-064-4658
NSN 6110-01-098-5739
NSN 5990-00-170-4239
NSN 5975-01-634-0678
NSN 6320-00-790-4844
NSN 5920-01-164-8260
NSN 6130-01-093-3077
NSN 5895-01-380-3349
NSN 5855-00-149-0766
NSN 6145-01-038-5971
NSN 6240-00-658-3207
NSN 5910-00-168-8218