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 6135-00-519-1325
NSN 6240-01-015-7791
NSN 6240-00-168-0790
NSN 5935-01-038-5201
NSN 6610-01-257-5808
NSN 6130-01-210-0498
NSN 5910-01-143-1012
NSN 5935-01-479-8572
NSN 6130-01-579-4407
NSN 5915-01-372-6505
NSN 5945-00-442-3162
NSN 5998-00-028-3488