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 6105-00-478-5731
NSN 5915-00-233-4501
NSN 5960-01-628-2760
NSN 5999-01-108-6547
NSN 4140-00-368-4261
NSN 4140-01-262-9164
NSN 5930-00-261-7071
NSN 5965-01-535-0428
NSN 6105-01-433-2899
NSN 6645-00-596-5388
NSN 5910-00-284-7297
NSN 6650-01-624-0818