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 5935-01-409-0702
NSN 2925-00-932-6262
NSN 6135-01-360-1620
NSN 6240-00-677-0305
NSN 6685-01-090-2671
NSN 5935-00-579-5638
NSN 5835-01-481-4204
NSN 5855-01-533-3888
NSN 6105-01-381-1088
NSN 6150-01-599-0283
NSN 5835-01-537-1228
NSN 6145-00-122-9517