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 5935-00-705-1763
NSN 5960-00-983-7232
NSN 6240-01-581-2000
NSN 6110-01-154-3066
NSN 5996-01-228-9306
NSN 5935-00-295-5741
NSN 6645-00-376-4829
NSN 6650-01-028-2820
NSN 5930-00-789-9855
NSN 5996-00-764-1610
NSN 5999-01-203-8039
NSN 5990-01-333-8678