NordicStove Burner Ring 5.75" x 1" OD, 68

The burner ring forms the primary combustion surface inside the vaporizing burner cavity of the NordicStove 68 series heater. Heating oil delivered through the fuel nozzle tube enters the base of the burner cavity, contacts the heated burner surface, and vaporizes. The vaporized fuel rises through and around the burner ring, where it mixes with combustion air drawn through the chimney draft and ignites across the catalytic ring surface. The catalytic properties of the ring support more complete and efficient combustion of the vaporized fuel, contributing to consistent heat output and reduced carbon emission at both the low and high burn settings of the 68 series heater.

The burner ring is marked with an orientation indicator — identified as UP or UPSIDE — that must face upward when the ring is placed into the burner cavity. Installing the ring upside down disrupts the designed fuel vaporization and air-fuel mixing geometry within the burner, which produces uneven flame distribution, incomplete combustion, and degraded heat output at both the low and high burn settings. The ring must be seated fully and evenly within the cavity before the top plate is replaced and the stove is returned to operation.

The burner ring should be replaced when carbon accumulation on its surface cannot be adequately removed through routine cleaning with a carbon-removing fuel additive or by brushing the burner cavity interior after removing the top plate and ring, when the ring surface shows physical deterioration such as cracking or erosion that reduces the effective combustion area, or when flame quality and heat output at either burn setting remain degraded after cleaning and oil controller calibration have been verified as correct. Replacement of the burner ring is a standard maintenance procedure following extended heavy use across multiple heating seasons.

No. The 50004 burner ring is sized at 5.75 inches by 1 inch outer diameter specifically for the NordicStove 68 series burner cavity. The 130, 250, and 400 series NordicStove heaters use burner cavities of different dimensions requiring ring sets sized to match their specific cavity geometry — the 130 series uses a 6.75-inch by 1-inch ring set, the 250 series uses a 7.6-inch by 2-inch ring set, and the 400 series uses a 9.5-inch by 2-inch ring set. Installing a ring sized for a different series will result in an improper fit that prevents correct seating and disrupts the air-fuel mixing geometry within the burner cavity.

After heavy continuous use over several months, the burner ring should be inspected and cleaned as part of the recommended periodic maintenance schedule for NordicStove heaters. A small quantity of carbon-removing fuel additive introduced to the burner during operation can reduce carbon deposits on the ring surface without requiring disassembly. If the additive does not remove sufficient carbon, the top plate should be removed, the burner ring lifted out, and the interior walls of the heater and burner cavity brushed clean before the ring is reinstalled in its correct orientation. The condition of the ring surface should be assessed at each cleaning to determine whether replacement is warranted.

Common symptoms of a degraded or improperly seated burner ring include a weak or uneven flame at the high burn setting, flame burning only on one side of the burner or failing to spread evenly across the ring surface, reduced heat output across the operating range, and flame instability or extinction at the low burn setting. An improperly oriented ring causes similar symptoms by disrupting the designed vaporization and air-fuel mixing geometry. These symptoms overlap with other potential causes such as inadequate chimney draft, a blocked fuel nozzle, or an unlevel stove, so the burner ring condition and orientation should be verified as part of any systematic troubleshooting of flame q