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 6130-01-513-9191
NSN 5905-01-382-9671
NSN 5935-00-997-8639
NSN 5945-01-423-1009
NSN 2925-00-491-3549
NSN 5855-01-286-9928
NSN 2925-01-110-1467
NSN 4140-01-579-3566
NSN 5999-01-605-2672
NSN 6135-00-221-4720
NSN 5895-00-197-4899
NSN 6145-01-557-4906