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 5910-01-063-9113
NSN 5975-01-556-3662
NSN 7035-01-385-7306
NSN 6320-01-607-0347
NSN 4140-00-165-6535
NSN 6130-01-188-7411
NSN 6220-01-615-8409
NSN 6110-01-224-9006
NSN 2925-00-402-5582
NSN 7035-00-055-9778
NSN 5915-01-484-5029
NSN 5975-00-985-2748