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 6105-01-262-5381
NSN 4140-00-155-8012
NSN 5925-01-127-6001
NSN 5935-01-577-3624
NSN 5990-01-104-8974
NSN 5855-01-469-6123
NSN 6320-00-476-6898
NSN 5996-01-227-4496
NSN 6320-01-484-7734
NSN 5998-00-067-4316
NSN 6150-01-030-8740
NSN 5960-00-106-7247