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 5835-01-259-0859
NSN 6130-01-103-3433
NSN 5975-01-144-5989
NSN 5895-01-432-1279
NSN 6105-00-962-2512
NSN 5920-00-100-1294
NSN 5950-00-113-4398
NSN 5960-00-597-2680
NSN 5930-01-384-3848
NSN 6135-01-187-4382
NSN 5990-00-845-2864
NSN 5910-01-056-5111