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 6240-01-122-7391
NSN 5910-00-882-1721
NSN 6650-00-548-9797
NSN 5998-00-285-8613
NSN 5965-01-578-6260
NSN 6650-01-308-2002
NSN 6135-01-571-0845
NSN 5998-00-314-5724
NSN 5975-01-054-7123
NSN 6220-01-113-1474
NSN 2925-01-141-7563
NSN 6105-00-913-1484