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 5960-01-100-7381
NSN 5895-01-632-7350
NSN 5915-01-283-8500
NSN 6150-01-616-7575
NSN 7035-01-025-9312
NSN 5930-00-997-0503
NSN 6105-01-369-1262
NSN 5999-01-290-3888
NSN 6240-00-117-9957
NSN 5920-01-031-7891
NSN 5920-01-310-6027
NSN 6110-01-477-1496