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 5930-01-218-5497
NSN 4140-00-356-1639
NSN 6130-01-227-0435
NSN 4140-01-431-9065
NSN 6105-01-166-4923
NSN 5985-00-683-2188
NSN 6240-00-578-6763
NSN 5990-01-175-2597
NSN 6145-01-523-5046
NSN 5985-00-697-1469
NSN 5975-01-445-6261
NSN 2925-00-993-7715