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 6110-01-502-8224
NSN 5835-00-987-9341
NSN 5855-01-247-9666
NSN 6145-01-263-2041
NSN 4140-00-083-6072
NSN 6650-01-447-4631
NSN 5965-00-368-8204
NSN 5990-01-541-7671
NSN 5990-00-613-2279
NSN 5910-01-463-8455
NSN 5965-01-480-3096
NSN 6685-01-464-3766