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 5950-00-290-1853
NSN 6240-00-635-9798
NSN 5920-01-471-0634
NSN 6240-01-542-9964
NSN 4140-01-395-8430
NSN 5950-00-786-5551
NSN 5960-01-158-9166
NSN 5999-01-080-2644
NSN 6110-01-339-3061
NSN 5950-01-498-4807
NSN 5985-01-586-5215
NSN 5950-01-529-9548