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 6620-01-424-6925
NSN 5950-01-004-9326
NSN 5960-00-389-2915
NSN 5930-00-862-9777
NSN 6240-01-632-6885
NSN 6130-01-415-0590
NSN 5930-01-193-1550
NSN 6240-01-494-8044
NSN 6320-00-186-6452
NSN 5996-00-937-0585
NSN 7035-00-834-2090
NSN 5990-01-167-7043