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 6645-00-192-1152
NSN 7035-01-544-1157
NSN 5985-01-114-8957
NSN 5920-01-615-5435
NSN 5965-01-519-1929
NSN 4140-00-540-2683
NSN 6105-01-152-2367
NSN 5945-01-264-1878
NSN 6150-00-168-9968
NSN 5945-01-065-0887
NSN 6130-01-378-8271
NSN 5935-00-682-2407