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 6220-00-707-5044
NSN 6240-01-654-6989
NSN 6150-01-089-9145
NSN 6130-00-900-2614
NSN 2925-01-472-4144
NSN 5999-01-547-8760
NSN 5920-00-826-9035
NSN 6320-00-691-8514
NSN 5960-01-224-8022
NSN 4140-01-492-3258
NSN 5915-00-078-9574
NSN 5975-01-106-2941