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 5965-01-484-7210
NSN 6650-00-434-0188
NSN 6150-01-554-8119
NSN 6110-00-574-5130
NSN 6145-01-616-5095
NSN 6150-00-923-7742
NSN 5999-00-320-7363
NSN 5925-01-539-9181
NSN 6110-00-740-5750
NSN 5920-00-034-0940
NSN 5945-01-077-8685
NSN 4140-01-609-5718