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 5905-01-035-0890
NSN 5950-01-644-2124
NSN 6610-01-524-5998
NSN 5998-01-516-9766
NSN 5855-01-100-3272
NSN 6650-00-139-5459
NSN 5960-00-170-6447
NSN 5835-01-514-5758
NSN 5930-00-135-4334
NSN 5965-00-372-2537
NSN 5895-01-290-6472
NSN 5915-00-581-2651