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 5935-01-422-0239
NSN 6610-00-901-5137
NSN 6610-01-309-5361
NSN 5975-00-817-4476
NSN 6610-01-264-4888
NSN 5935-00-102-9651
NSN 5925-01-479-4984
NSN 5998-00-787-4044
NSN 6105-00-655-0893
NSN 6645-01-027-3838
NSN 5996-01-658-9316
NSN 5945-00-045-0507