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 6220-01-415-0553
NSN 5835-01-469-6009
NSN 6240-00-161-8099
NSN 5935-01-649-1601
NSN 5990-01-334-8634
NSN 7035-01-621-4812
NSN 2925-01-653-0629
NSN 6650-01-290-4001
NSN 5935-00-135-0771
NSN 6105-00-922-2959
NSN 6650-00-950-4107
NSN 2925-01-430-4206