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 5930-01-227-5584
NSN 5950-01-650-3914
NSN 2925-01-594-5385
NSN 6105-01-654-6408
NSN 6110-01-229-6805
NSN 4140-01-280-0567
NSN 5950-00-378-0398
NSN 2925-00-355-5130
NSN 5996-00-770-1863
NSN 5996-00-222-6049
NSN 5905-01-062-4774
NSN 6150-00-993-6192