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 5950-00-478-2413
NSN 5920-01-023-6818
NSN 5925-01-529-6836
NSN 5855-01-634-0259
NSN 5998-01-472-2825
NSN 6220-01-596-3176
NSN 5920-00-169-4428
NSN 5996-00-068-5604
NSN 6105-01-630-2239
NSN 5965-01-358-6859
NSN 5999-00-188-7973
NSN 5945-01-426-8747