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 5999-00-541-5947
NSN 6150-00-072-9384
NSN 6645-01-355-7334
NSN 5999-01-607-7149
NSN 5990-00-372-5177
NSN 6685-01-057-2823
NSN 6240-01-055-5193
NSN 5960-01-504-1892
NSN 6240-01-137-7383
NSN 5996-01-654-0974
NSN 6150-01-312-3630
NSN 5895-00-596-8678