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 5930-00-785-6558
NSN 6110-00-858-6770
NSN 5990-01-392-8842
NSN 6620-00-555-3992
NSN 6320-00-405-2348
NSN 5945-00-479-3094
NSN 6320-01-103-6218
NSN 5990-01-146-9126
NSN 7035-01-443-3052
NSN 5965-00-990-8669
NSN 5998-01-065-2164
NSN 6110-00-566-6498