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 5960-01-433-7565
NSN 5965-01-256-9460
NSN 6320-01-354-6204
NSN 5930-01-071-4205
NSN 5920-00-228-4498
NSN 4140-01-041-8896
NSN 5920-01-182-8745
NSN 5990-00-504-9009
NSN 5835-01-336-1153
NSN 5996-00-778-8663
NSN 7035-01-332-9582
NSN 5998-00-065-4482