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 6105-00-144-1754
NSN 6105-00-753-7458
NSN 5930-00-772-5226
NSN 6610-01-352-2976
NSN 5930-00-282-2736
NSN 5985-00-960-0141
NSN 6320-00-225-7013
NSN 6220-01-261-4888
NSN 6130-00-277-7321
NSN 5915-00-053-4369
NSN 5996-01-432-2779
NSN 5990-01-360-0711