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 5996-01-461-3464
NSN 5910-01-621-3415
NSN 2925-01-415-2140
NSN 5915-01-003-3369
NSN 6135-01-541-6101
NSN 6650-01-455-7280
NSN 5930-00-250-9111
NSN 5965-01-274-2151
NSN 6130-00-820-4986
NSN 6135-01-581-1039
NSN 6150-01-442-6055
NSN 6240-01-467-0751