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 5945-01-586-2926
NSN 5935-00-020-2954
NSN 6110-01-519-9131
NSN 6610-01-441-1581
NSN 6110-00-504-2441
NSN 6650-00-409-3139
NSN 5965-00-554-4138
NSN 6135-01-282-4326
NSN 6610-01-425-1523
NSN 5835-01-180-9441
NSN 5985-00-581-9754
NSN 2925-01-472-4423