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 6145-01-604-7029
NSN 6685-01-593-4175
NSN 6320-01-252-2307
NSN 5910-00-502-7031
NSN 2925-01-123-2235
NSN 5950-01-194-4220
NSN 6320-00-139-1090
NSN 6150-01-423-9708
NSN 6645-01-099-0249
NSN 2925-00-474-4990
NSN 5965-01-500-7168
NSN 4140-01-634-0330