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 5990-01-157-0441
NSN 5950-01-339-0185
NSN 6240-01-285-7857
NSN 5999-01-441-0945
NSN 6135-01-215-1245
NSN 6135-00-733-9665
NSN 5985-00-528-1902
NSN 6110-00-616-2860
NSN 5925-01-234-3813
NSN 6130-01-607-8366
NSN 4140-01-143-3520
NSN 6150-01-563-6456