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 5920-01-650-4788
NSN 5985-00-925-1216
NSN 5950-01-394-1367
NSN 6320-00-358-1946
NSN 5925-01-246-2275
NSN 6105-00-244-3007
NSN 5945-01-206-9421
NSN 5910-01-382-8803
NSN 5965-00-370-3855
NSN 5855-01-652-9653
NSN 5945-01-062-6242
NSN 5990-01-443-2931