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 6130-00-960-9158
NSN 4140-00-020-1835
NSN 5965-01-136-3180
NSN 5935-01-600-3326
NSN 5895-01-533-0144
NSN 6220-01-398-3305
NSN 5998-00-186-8583
NSN 6685-01-343-2955
NSN 6620-00-495-7438
NSN 6240-00-505-6099
NSN 5975-01-072-3689
NSN 6150-00-855-6125