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 5905-01-302-5932
NSN 4140-00-501-7833
NSN 6240-00-913-1657
NSN 6650-01-359-4238
NSN 6130-01-436-5185
NSN 5910-01-230-9966
NSN 5998-01-219-7139
NSN 5835-01-406-4066
NSN 5965-00-324-2428
NSN 5990-00-826-7051
NSN 7035-00-111-4389
NSN 5915-01-334-2983