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 5855-01-613-1202
NSN 5950-01-183-8505
NSN 6620-00-189-0967
NSN 6105-00-151-7528
NSN 5999-01-447-6411
NSN 6650-00-150-6885
NSN 5975-01-036-3507
NSN 5990-01-276-8122
NSN 6240-01-316-0488
NSN 5855-00-455-6070
NSN 5998-00-527-8273
NSN 5835-01-158-6878