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 5855-01-308-0955
NSN 5996-01-102-6646
NSN 5965-00-945-3454
NSN 5965-01-050-6802
NSN 5905-01-100-3374
NSN 5935-00-276-9413
NSN 5945-00-076-0672
NSN 5960-00-529-2704
NSN 5965-00-045-3440
NSN 5930-01-418-8115
NSN 5985-00-128-6215
NSN 4140-01-074-2588