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 5999-00-236-8995
NSN 6105-00-456-1433
NSN 5905-01-538-3687
NSN 4140-00-566-3896
NSN 5855-01-076-5202
NSN 5920-01-206-0191
NSN 2925-01-462-1620
NSN 6320-01-476-7702
NSN 5920-01-386-3188
NSN 6110-00-722-8416
NSN 5935-00-450-6358
NSN 6240-00-243-0340