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 6650-01-352-7111
NSN 6145-01-391-5022
NSN 6150-00-234-3248
NSN 4140-01-334-9043
NSN 6135-01-265-1384
NSN 6130-01-423-8338
NSN 6645-01-571-6404
NSN 5960-00-466-2258
NSN 5996-01-357-0448
NSN 5910-01-084-7276
NSN 4140-00-338-8770
NSN 6105-01-270-7412