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 5935-00-540-8615
NSN 5999-01-384-6154
NSN 5975-01-351-3873
NSN 6110-00-141-1966
NSN 6620-01-325-6295
NSN 6150-01-363-2154
NSN 6110-00-759-8317
NSN 5930-01-210-9879
NSN 5998-01-372-4758
NSN 4140-01-307-9783
NSN 6240-01-423-1335
NSN 7035-01-633-9537