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 5990-01-580-2191
NSN 6145-01-240-3909
NSN 5990-00-446-0518
NSN 6685-01-029-7922
NSN 6150-00-538-1176
NSN 5996-01-607-7035
NSN 5920-00-149-1469
NSN 6130-01-264-2636
NSN 6650-01-035-9350
NSN 5895-00-496-9231
NSN 5835-01-416-6449
NSN 5905-01-564-5461