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 4140-00-347-6807
NSN 6145-00-564-5591
NSN 5945-01-372-1618
NSN 6105-01-035-7197
NSN 5935-01-620-4800
NSN 5998-01-396-8356
NSN 6130-00-769-9624
NSN 6620-01-126-4126
NSN 5996-00-824-4709
NSN 7035-00-238-3662
NSN 5998-01-483-0810
NSN 5945-00-259-5356