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 5855-01-593-3985
NSN 5990-00-561-3407
NSN 6135-01-486-5455
NSN 6650-01-029-2995
NSN 5996-01-310-8683
NSN 5998-01-329-0362
NSN 5975-01-588-5058
NSN 6610-00-365-4454
NSN 6240-01-102-4861
NSN 5945-01-276-3712
NSN 5920-01-131-1859
NSN 5895-01-227-0484