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 5990-00-788-3829
NSN 6220-01-136-2765
NSN 5975-00-900-6083
NSN 6135-00-539-8088
NSN 6650-00-205-6282
NSN 6650-01-050-8680
NSN 5935-01-287-9334
NSN 5910-01-551-8720
NSN 5975-00-981-2486
NSN 6105-01-317-7282
NSN 5945-01-605-8094
NSN 5920-00-665-3973