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 6110-00-088-6644
NSN 6150-00-789-3738
NSN 5965-00-393-1294
NSN 5920-01-650-4788
NSN 6320-01-015-9856
NSN 5915-01-605-2725
NSN 5999-01-517-3183
NSN 6220-00-025-7215
NSN 5996-01-220-8021
NSN 6150-00-943-8767
NSN 6105-00-221-0809
NSN 6320-01-271-0247