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 6105-00-788-2875
NSN 5950-00-216-7548
NSN 5910-01-455-2305
NSN 5999-00-041-3383
NSN 6240-00-334-6766
NSN 5950-01-343-0431
NSN 5998-01-169-0649
NSN 7035-01-209-0045
NSN 5915-00-006-5403
NSN 5990-01-452-0911
NSN 6650-00-705-0269
NSN 6240-00-505-6099