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 5960-01-387-5290
NSN 6610-01-462-5980
NSN 6610-01-613-1831
NSN 5999-00-343-1896
NSN 2925-00-936-9344
NSN 6135-00-274-4037
NSN 5905-01-418-8424
NSN 6620-01-551-7071
NSN 5930-00-231-8647
NSN 5950-00-150-4772
NSN 5935-00-020-9707
NSN 5835-01-123-8305