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 5950-01-537-7142
NSN 5965-00-242-0001
NSN 6645-00-936-2505
NSN 6150-00-595-6931
NSN 5996-00-301-5243
NSN 5990-00-444-6987
NSN 6105-01-231-2366
NSN 6240-01-238-5374
NSN 6110-00-244-0427
NSN 4140-01-171-3246
NSN 5945-00-683-8334
NSN 7035-01-137-6206