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 6620-01-234-1799
NSN 5920-00-106-1454
NSN 2925-01-574-3246
NSN 5975-01-413-2474
NSN 5999-01-147-5317
NSN 5920-00-972-7203
NSN 5998-00-109-2660
NSN 5999-00-850-2022
NSN 5835-00-632-8621
NSN 6110-00-800-9978
NSN 5905-01-412-8600
NSN 2925-01-004-5627