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 5998-01-580-0933
NSN 6320-00-681-1324
NSN 5925-01-116-8225
NSN 6610-01-325-4157
NSN 5895-01-334-6260
NSN 5950-00-343-1910
NSN 2925-01-197-7864
NSN 5960-01-142-8170
NSN 6685-00-503-2759
NSN 2925-01-440-9912
NSN 5915-01-479-4809
NSN 5855-01-173-0808