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 5930-01-539-6653
NSN 5996-01-630-5791
NSN 5935-01-457-4742
NSN 5920-01-093-1081
NSN 5895-01-422-3344
NSN 5835-01-138-8622
NSN 6130-00-987-3288
NSN 6610-01-029-6703
NSN 5996-01-540-5020
NSN 6620-01-391-4189
NSN 6240-01-116-3382
NSN 6130-01-058-6271