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 6135-00-223-9563
NSN 5985-01-411-9139
NSN 5855-01-149-4110
NSN 5960-00-682-2777
NSN 2925-01-466-0892
NSN 5930-01-438-7296
NSN 5910-00-596-3179
NSN 5996-00-236-3206
NSN 6105-01-192-1735
NSN 5996-01-258-5638
NSN 5835-00-466-8544
NSN 6610-00-574-0156