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 4140-01-468-0277
NSN 6620-01-065-8265
NSN 5930-01-519-8747
NSN 5950-00-800-9949
NSN 5945-01-455-3124
NSN 6610-01-269-5437
NSN 6135-01-348-8264
NSN 6150-00-969-8825
NSN 4140-01-196-5232
NSN 6620-00-766-3974
NSN 5925-01-518-9119
NSN 6105-01-226-9363