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 6110-00-397-7531
NSN 5855-01-053-0679
NSN 5910-00-997-1241
NSN 6220-01-299-6790
NSN 6610-01-497-4579
NSN 6220-01-350-3108
NSN 5915-00-428-1662
NSN 5905-00-679-9550
NSN 6105-01-448-2655
NSN 5920-01-348-2234
NSN 6645-00-664-4665
NSN 5965-01-520-9725