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 5835-01-619-6268
NSN 5905-01-237-7915
NSN 5950-01-428-4020
NSN 6105-01-513-2529
NSN 6650-01-391-9999
NSN 6650-01-290-4001
NSN 5925-01-497-6788
NSN 6105-01-554-6825
NSN 5945-01-387-3856
NSN 6320-01-618-7800
NSN 6135-00-271-0407
NSN 5855-00-477-9943