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 6130-01-564-5890
NSN 6320-01-372-8671
NSN 6145-01-519-0365
NSN 5998-01-587-8054
NSN 6135-01-472-5681
NSN 6150-00-159-8949
NSN 6610-00-931-3656
NSN 6685-00-910-6988
NSN 6320-01-317-3663
NSN 5999-01-357-5606
NSN 6135-01-377-5729
NSN 5915-01-140-1087