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 5910-00-992-0318
NSN 5905-00-284-2278
NSN 6220-01-381-1793
NSN 5895-01-427-9745
NSN 5920-01-080-7212
NSN 6320-01-631-7828
NSN 5920-01-387-0819
NSN 5998-00-436-1810
NSN 6150-01-013-9441
NSN 5920-01-144-3108
NSN 5895-00-354-1614
NSN 6620-01-128-4462