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 5998-00-936-9998
NSN 6620-01-437-8193
NSN 6105-00-932-5309
NSN 5999-01-335-2261
NSN 5998-01-013-8094
NSN 5910-01-583-2403
NSN 6110-00-285-1895
NSN 5930-00-891-9755
NSN 5999-00-170-9665
NSN 5905-01-232-1997
NSN 5975-00-553-7151
NSN 6145-01-278-8925