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 6130-01-654-5318
NSN 6220-00-168-5756
NSN 5950-01-199-5342
NSN 5935-00-188-8192
NSN 5960-00-519-8675
NSN 6110-01-556-4364
NSN 5998-01-503-3382
NSN 5990-00-800-2521
NSN 6150-00-500-7288
NSN 5905-00-313-0686
NSN 6620-00-155-2608
NSN 6610-01-628-6044