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 6240-00-947-2006
NSN 6110-01-375-8185
NSN 6240-00-087-1731
NSN 6105-01-115-2270
NSN 5945-01-423-9086
NSN 5950-00-232-7377
NSN 6105-01-603-5263
NSN 5925-00-259-2098
NSN 5990-01-516-9665
NSN 6610-00-076-5613
NSN 5985-01-316-9025
NSN 5920-01-408-3508