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 5915-01-411-1071
NSN 6135-01-383-1910
NSN 5998-01-142-2401
NSN 6685-00-847-4075
NSN 5930-00-249-4606
NSN 6130-01-473-9256
NSN 5925-00-142-9991
NSN 5905-00-797-8781
NSN 5915-00-239-0147
NSN 5910-01-506-4924
NSN 5998-00-574-1416
NSN 6150-01-139-4725