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 6240-01-371-8637
NSN 5950-01-290-3967
NSN 2925-01-185-1814
NSN 5950-01-496-4936
NSN 5975-00-251-2478
NSN 6130-01-145-5846
NSN 5910-01-615-3464
NSN 5910-01-434-4964
NSN 6150-01-322-7800
NSN 7035-00-941-4949
NSN 5915-01-592-3355
NSN 5990-01-485-0260