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 6110-01-317-2915
NSN 5975-00-208-6771
NSN 6320-01-592-6248
NSN 6650-01-369-1650
NSN 5950-01-410-2925
NSN 5855-00-991-0096
NSN 6150-01-545-3031
NSN 6320-01-481-7322
NSN 6145-00-592-4274
NSN 5975-01-445-6169
NSN 7035-00-782-7046
NSN 6685-01-016-2057