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 6320-00-450-1787
NSN 5935-00-557-0124
NSN 6320-01-233-5798
NSN 6105-00-862-9839
NSN 5990-01-474-3477
NSN 6105-01-535-0999
NSN 6685-01-018-2735
NSN 5999-00-056-1697
NSN 6110-00-338-9015
NSN 2925-01-330-2988
NSN 6650-01-098-2910
NSN 5930-00-735-8188