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 4140-01-210-0107
NSN 5965-01-248-4892
NSN 6650-00-155-8431
NSN 6650-00-403-5251
NSN 7035-01-501-5938
NSN 5998-00-329-4475
NSN 6145-01-411-7179
NSN 6105-00-935-8736
NSN 6135-01-463-2445
NSN 5930-01-445-4991
NSN 5985-01-435-9045
NSN 5935-00-771-6895