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 6240-01-251-3796
NSN 6110-01-227-3869
NSN 6320-01-516-3836
NSN 5945-01-658-8105
NSN 5835-01-328-6626
NSN 6105-01-244-4803
NSN 6610-01-547-3072
NSN 5999-00-476-4964
NSN 6150-01-451-2732
NSN 5910-01-565-9259
NSN 6135-01-579-8864
NSN 5930-01-302-0509