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 6240-01-205-7515
NSN 6220-01-359-9826
NSN 6220-01-334-6564
NSN 6220-01-135-2031
NSN 6610-01-068-7974
NSN 5998-01-358-8119
NSN 6130-01-364-1608
NSN 5998-00-621-4542
NSN 6610-01-482-6266
NSN 6650-01-572-2639
NSN 5915-01-509-9554
NSN 5996-00-770-1863