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 6650-01-168-8451
NSN 6610-00-717-6666
NSN 5835-00-851-6470
NSN 6610-01-447-5598
NSN 6220-01-159-0442
NSN 6105-00-482-6325
NSN 5998-01-355-8537
NSN 5895-01-048-9430
NSN 5998-00-008-4655
NSN 5950-01-502-7019
NSN 6650-01-502-6761
NSN 6130-01-433-2449