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 5996-01-196-2042
NSN 5915-01-382-9383
NSN 5935-01-326-3626
NSN 5910-01-113-9658
NSN 6320-00-937-5625
NSN 6110-01-025-1286
NSN 6620-01-566-1142
NSN 6105-01-527-2890
NSN 5950-01-013-7383
NSN 6610-01-233-5857
NSN 6220-01-155-6521
NSN 6685-01-463-1845