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 5855-00-797-8217
NSN 5998-00-259-3059
NSN 5990-01-544-4360
NSN 4140-01-011-8707
NSN 5996-01-170-1915
NSN 6110-00-530-3779
NSN 6110-01-420-4284
NSN 6105-01-336-7843
NSN 7035-01-411-6062
NSN 5920-01-474-5150
NSN 6150-01-364-6019
NSN 5996-00-959-4892