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 5935-01-354-9335
NSN 6145-01-389-7220
NSN 5950-00-870-0850
NSN 5985-01-347-2156
NSN 4140-01-442-7799
NSN 5935-00-936-2090
NSN 6650-01-233-1484
NSN 5965-01-260-7146
NSN 2925-00-143-5859
NSN 5950-01-593-6930
NSN 6135-01-442-7275
NSN 5855-01-621-5401