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 5999-00-404-1634
NSN 6135-00-299-6918
NSN 5925-01-501-6074
NSN 5965-00-481-5884
NSN 7035-01-650-7669
NSN 6610-00-762-0848
NSN 5920-01-051-0090
NSN 5930-00-008-7769
NSN 5996-01-391-7489
NSN 5998-01-655-2505
NSN 4140-01-609-1489
NSN 6650-01-090-0719