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 6130-01-521-3229
NSN 2925-01-226-6126
NSN 5910-00-780-8805
NSN 5998-00-951-3999
NSN 6130-00-881-2272
NSN 6150-01-657-2126
NSN 5945-01-529-6523
NSN 6110-00-104-4663
NSN 6620-00-678-3386
NSN 6145-01-443-3336
NSN 5950-00-825-2675
NSN 6220-01-030-7338