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 6650-01-446-6646
NSN 5910-01-502-9833
NSN 5945-01-531-5325
NSN 5835-01-248-0563
NSN 5998-00-951-0098
NSN 6135-00-097-8162
NSN 6650-00-834-9062
NSN 5975-00-599-6690
NSN 6220-00-682-8292
NSN 5835-01-261-9878
NSN 5930-01-029-3891
NSN 5998-01-427-1087