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 5930-01-296-1488
NSN 6240-01-199-3073
NSN 5930-01-499-0013
NSN 5950-00-189-9177
NSN 5835-00-922-1263
NSN 7035-00-727-4068
NSN 6685-00-912-1847
NSN 5910-01-550-9709
NSN 5990-01-411-5930
NSN 6220-01-537-4007
NSN 5835-00-754-7255
NSN 5998-00-090-3561