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 5945-00-089-2625
NSN 6650-01-158-4898
NSN 6130-00-007-9042
NSN 5935-01-606-6098
NSN 5930-00-455-9883
NSN 5975-01-502-7338
NSN 6135-01-199-1185
NSN 5960-01-437-7422
NSN 5950-00-552-6838
NSN 4140-00-631-2385
NSN 5950-01-233-1493
NSN 5945-01-584-0059