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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 5965-01-168-8180
NSN 6110-01-497-2279
NSN 5945-01-290-1239
NSN 5996-01-317-7289
NSN 6135-00-377-9165
NSN 5950-00-158-5352
NSN 2925-00-246-3077
NSN 5998-00-654-5278
NSN 5965-01-176-3227
NSN 5985-01-294-2808
NSN 5935-00-969-3861
NSN 6620-01-364-0195