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 5985-00-930-3876
NSN 5985-00-648-2081
NSN 5935-00-545-1666
NSN 6645-00-917-2143
NSN 5930-00-082-1655
NSN 7035-01-268-0933
NSN 4140-01-197-8148
NSN 5905-01-647-3770
NSN 5960-00-139-3204
NSN 5996-01-134-9922
NSN 6150-01-568-0097
NSN 6610-00-350-1091