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 5915-00-579-0618
NSN 5996-00-447-1810
NSN 5915-00-542-2179
NSN 6145-01-206-5578
NSN 6110-01-549-4275
NSN 6685-00-825-4673
NSN 5835-00-275-0584
NSN 6220-01-569-3168
NSN 6130-01-123-0083
NSN 6135-01-571-0845
NSN 5910-01-305-1723
NSN 6145-01-153-1413