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 4140-01-529-5604
NSN 6685-00-196-5592
NSN 6240-00-724-1782
NSN 5935-01-625-0705
NSN 6240-01-633-9357
NSN 5930-01-351-6919
NSN 6240-01-492-2469
NSN 6130-01-523-4852
NSN 6685-01-240-3752
NSN 6610-00-923-1917
NSN 4140-01-422-4223
NSN 5910-00-293-8196