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 6240-01-078-1658
NSN 5950-00-251-2310
NSN 6145-01-091-0246
NSN 5998-01-364-3951
NSN 5990-01-599-7106
NSN 6150-00-229-5635
NSN 5998-00-355-4882
NSN 5960-01-100-4454
NSN 5910-01-278-2003
NSN 6610-01-146-0331
NSN 4140-01-298-8193
NSN 6320-01-111-8851