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 5960-00-466-3523
NSN 5960-01-397-8328
NSN 5920-01-340-6950
NSN 5930-00-296-9258
NSN 6320-00-593-0379
NSN 5998-00-189-1570
NSN 5990-01-573-1634
NSN 5990-01-282-0570
NSN 6135-01-022-5427
NSN 5950-00-263-7433
NSN 5990-01-264-9759
NSN 5990-00-623-4198