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 5985-01-346-7912
NSN 5998-00-481-6149
NSN 7035-00-406-0568
NSN 6320-00-636-0922
NSN 5835-01-416-6455
NSN 4140-01-234-3276
NSN 5985-01-284-6306
NSN 5935-00-400-6217
NSN 5960-00-431-8739
NSN 5996-01-027-1729
NSN 5996-00-564-6472
NSN 5950-01-411-6124