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 5855-01-545-3659
NSN 5895-00-409-7281
NSN 5910-01-325-1979
NSN 5999-00-928-0080
NSN 6150-00-205-2490
NSN 5996-00-605-3009
NSN 5930-01-345-7220
NSN 5945-00-583-6917
NSN 5960-00-943-5245
NSN 5960-01-167-8796
NSN 6145-01-346-0144
NSN 4140-00-370-2612