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 5950-01-367-9921
NSN 5905-01-044-2957
NSN 6220-01-483-1448
NSN 5945-01-619-7340
NSN 5935-01-658-7373
NSN 5910-01-481-4621
NSN 5998-01-064-5111
NSN 6220-01-581-0484
NSN 5996-01-498-0653
NSN 5999-00-495-0432
NSN 5905-00-584-8447
NSN 6240-01-227-4178