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 5990-00-062-9483
NSN 6150-01-432-1812
NSN 6220-00-568-8696
NSN 6610-01-134-8993
NSN 5895-01-178-4061
NSN 5935-01-657-6055
NSN 6650-01-268-9702
NSN 5910-01-427-3819
NSN 5930-01-423-9415
NSN 5935-00-737-1268
NSN 6685-00-929-1185
NSN 7035-01-585-4418