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 6130-01-495-0274
NSN 6220-01-650-6302
NSN 6145-01-505-4272
NSN 5910-01-406-4317
NSN 5930-01-146-4324
NSN 6135-01-512-8740
NSN 5945-00-261-7955
NSN 6220-01-241-4625
NSN 6105-00-329-4335
NSN 5950-00-419-5406
NSN 5998-01-087-8112
NSN 5985-01-138-3225