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 6150-01-618-2771
NSN 2925-01-197-7864
NSN 6240-01-198-3897
NSN 7035-01-105-3787
NSN 2925-01-336-2820
NSN 5998-01-419-2522
NSN 5950-01-177-1695
NSN 6320-00-977-3930
NSN 5935-00-753-7279
NSN 6135-00-803-3012
NSN 5950-01-321-6178
NSN 5960-01-029-4253