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 5998-01-436-1892
NSN 6240-01-262-0148
NSN 6150-00-901-7264
NSN 5975-01-100-1063
NSN 5855-01-384-7120
NSN 5895-00-942-5559
NSN 5960-01-518-4440
NSN 6320-01-415-0953
NSN 5895-01-140-3368
NSN 4140-00-102-8607
NSN 5996-00-753-1599
NSN 5910-00-196-0608