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 5920-01-442-3395
NSN 5999-00-050-7773
NSN 5915-01-293-3847
NSN 6650-01-332-7634
NSN 6105-00-553-1018
NSN 4140-00-908-2763
NSN 5915-01-422-9979
NSN 5835-01-128-9331
NSN 6610-01-187-1748
NSN 6130-00-012-3070
NSN 6240-01-533-8941
NSN 6610-01-318-1840