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 5975-00-780-5123
NSN 6110-01-359-6618
NSN 6130-01-212-2151
NSN 5996-01-372-8174
NSN 5915-01-306-4466
NSN 5895-01-377-4613
NSN 5930-01-423-8646
NSN 6645-01-076-4655
NSN 6240-01-148-9044
NSN 4140-01-374-4673
NSN 6130-01-488-9739
NSN 5920-01-435-0555