01Dental sintering furnaces
Heating elements for dental sintering furnaces
For dental furnace service companies, dealers and dental labs. There is no universal dental element: the element type, diameters, lengths and leg spacing depend on the furnace model. We check the model and the old element first, then quote.
Last updated 12 October 2026
ATypical situations
Where it usually goes wrong
The furnace stopped and the lab is waiting
An element broke mid-week and the sintering schedule is on hold.
What we do: Send the model and one photo first. We check the size before anything else, so the size is agreed before anything is sent.
4/9 or 3/6?
Both are small U elements and look alike in a photo; the order goes wrong when the size is guessed.
What we do: We ask for the two diameters (heating section and terminal) or a photo next to a ruler, and confirm which one it is.
Right diameter, wrong leg spacing
Le, Lu and the leg spacing a differ between furnace models even at the same diameter.
What we do: We read Le, Lu and a from your photo or measurements and write them back to you before you confirm.
SiC rods that must work as a set
Some dental furnaces heat with thin SiC rods or SGR spiral rods, and these run as a matched set.
What we do: Send us your furnace model and old element to check; we read size and resistance marking and reply for the whole set.
Furnace models and guides
What this furnace type usually uses
| Uses | Small U-shaped MoSi2 elements (4/9 or 3/6); some furnaces heat with SiC thin rods or SGR spiral rods |
|---|---|
| Check | Furnace model and old element. MoSi2: d/c, Le, Lu, leg spacing a, shape. SiC: OD, HZ, OL, resistance marking. Elements per furnace |
“Usually” is not a statement about your furnace: every request is checked against your own part number, photos and dimensions.
013D illustrationDental MoSi2 4/9furnace model · Le · Lu · aSmall U elements of the size many dental sintering furnaces use; checked by furnace model.What to send 
023D illustrationDental-furnace SiC: thin rods & SGR spiral rodsfurnace model · OD · HZ · OL · ΩSilicon carbide elements for dental furnaces that heat with SiC; checked against the furnace model and the old element.What to send BHow we work
How we check your element
Send
The furnace model and a photo of the old element, or its part number. Dimensions if you can measure.
We check and confirm the spec
We check the dimensions and reply in writing with the size line we read, any missing value, and whether we can supply it.
You confirm the configuration
Size, number of elements per set and, for SiC rods, how they are grouped by resistance.
Production and shipping
Production and shipping are arranged for the confirmed configuration; the quote covers that element and quantity.
More on how we work.
Testing, checking and packing
Typical steps for elements of these types: power tests on a rack, checks against the size line, and packing in foam and crates. Elements are brittle at room temperature, so handbooks advise unpacking on a flat surface and checking each element for cracks before it goes into the furnace.
Photos show typical elements, testing and packing of each type – not a specific order, and not a promise of how an order is packed. Packing details are confirmed with the quote.
Questions buyers ask
What is the difference between 4/9 and 3/6 MoSi2 elements?
The numbers are the diameters in millimetres: hot zone / terminal. A 4/9 element has a 4 mm heating section and 9 mm terminals; a 3/6 element has 3 mm and 6 mm. Many dental sintering furnaces use 4/9; fewer use 3/6, and some documents write the size as 9/4. The two sizes are not interchangeable, and lengths and leg spacing still differ between furnaces, so the furnace model and a photo of the old element are needed.
Do you supply the SiC rods some dental furnaces use?
Yes: thin SiC rods and SGR spiral rods for dental furnaces that heat with silicon carbide instead of MoSi2. These elements are specific to the furnace, and spiral rods are also matched by resistance, so send us your furnace model and old element to check.
Why does the centre distance matter so much?
The legs of a U element pass through holes or slots in the furnace roof or wall. Leg centre distance is measured centre to centre (a for MoSi2, A for SiC U rods), and it differs between furnaces even when the diameters are the same: a 6/12 element, for example, comes with different centre distances. A few millimetres decide whether the element goes in, so we always ask for it if it is missing.
There is no readable part number. What now?
Send the furnace brand and model from the type plate and a photo of the old element next to a ruler, with the dimensions you can measure. Tick “I don’t know the dimensions” in the form if you cannot measure – the photos are enough to start.
Can you tell which element my furnace needs from its name?
Not from the furnace name or a part number alone. Our reply writes out the size line we read from your photos and dimensions, so you can compare it with the old element before you confirm anything.
Request a quote
Send the part number, or a photo of the old element with the dimensions. We reply by email with the size line we read and anything missing.