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 5910-00-468-3366
NSN 6150-00-162-4211
NSN 5930-01-087-2665
NSN 5990-01-462-1617
NSN 5895-01-485-2470
NSN 5960-01-547-6699
NSN 6610-00-127-4118
NSN 5835-00-113-6090
NSN 5999-00-186-0058
NSN 5985-00-657-1578
NSN 5985-01-534-9915
NSN 5945-01-491-0173