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 6320-01-600-5808
NSN 5960-00-837-2411
NSN 6240-00-008-1654
NSN 4140-00-788-6098
NSN 5935-00-632-4802
NSN 2925-00-957-7329
NSN 5965-00-823-8623
NSN 6220-01-254-0091
NSN 5930-00-171-8867
NSN 4140-01-388-4289
NSN 6240-01-302-6537
NSN 5910-01-431-9690