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 6610-01-492-6515
NSN 5950-01-363-8439
NSN 5930-01-199-1645
NSN 6145-01-337-5554
NSN 6150-01-154-9286
NSN 5935-01-158-8330
NSN 6220-01-386-4832
NSN 6320-00-456-0836
NSN 5920-00-905-1831
NSN 7035-01-282-7124
NSN 6135-01-540-5253
NSN 6135-00-134-6648