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 5905-01-598-1739
NSN 5935-00-661-0825
NSN 5915-00-062-6127
NSN 6110-00-944-5726
NSN 5950-00-306-0903
NSN 5990-01-485-0260
NSN 6150-00-090-6982
NSN 6685-00-350-9248
NSN 4140-01-306-7138
NSN 5835-00-883-8182
NSN 5985-01-441-8140
NSN 5990-00-197-0159