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 5895-01-368-8662
NSN 5965-01-261-6073
NSN 5998-01-573-5516
NSN 5965-00-711-6419
NSN 6610-01-254-3647
NSN 6110-00-221-1868
NSN 6135-00-889-1485
NSN 5960-01-495-0859
NSN 5905-00-497-4287
NSN 5975-01-437-9784
NSN 7035-01-577-0003
NSN 6650-00-499-4439