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 5855-01-320-7640
NSN 6645-00-542-1734
NSN 6645-00-943-9063
NSN 5985-01-630-7659
NSN 4140-01-583-2106
NSN 5999-01-188-7811
NSN 5930-01-359-0643
NSN 5910-01-429-8785
NSN 5990-00-206-3753
NSN 6220-01-263-3899
NSN 6105-00-847-8199
NSN 6105-00-900-8304