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 6240-01-039-4241
NSN 5910-00-424-3803
NSN 5960-01-015-0381
NSN 5920-00-468-3074
NSN 6240-01-285-7616
NSN 5975-01-523-0125
NSN 5999-00-006-0503
NSN 5999-01-442-4750
NSN 5996-01-300-4347
NSN 6220-01-381-1793
NSN 5855-01-621-2140
NSN 5905-01-422-3229