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 5920-00-372-5864
NSN 5998-01-456-1134
NSN 5855-01-472-3963
NSN 6220-01-038-5057
NSN 5990-00-276-8650
NSN 5895-01-263-6747
NSN 6135-00-542-6728
NSN 5965-01-167-3495
NSN 5990-01-362-5373
NSN 5996-01-381-9313
NSN 6105-00-699-9186
NSN 5990-01-050-1102