Disc & ring MCH heaters
Round and annular alumina elements for coaxial mounting, sensor windows and fluid paths — where a square chip wastes space or blocks the thing you are trying to heat.
Geometry that follows your heat path
We lay out the printed resistor as a spiral or segmented arc so the heated area matches the ring, and keep the electrode pads away from the mounting face. Centre bores, key slots and counterbores are formed before firing, not machined afterwards, so there are no micro-cracks at the edge.
- Outer diameter Ø3–60 mm, custom inner bore
- Flat annular, cup and stepped profiles
- Single or multi-zone circuits with independent leads
- Optional flange, metalisation for brazing, and thermocouple pocket
Typical uses
Common in automotive oxygen sensors, aroma and atomiser devices, analytical instruments, small moulds and circular heating plates where uniform circumferential temperature matters more than raw peak power.
- Oxygen / gas sensor heating cores
- Aroma diffusers and atomisers
- Laboratory and analytical heating stages
- Circular sealing and bonding heads
Specifications
Questions buyers ask
Yes. Multi-zone circuits with separate lead pairs are a standard customisation; send us the zone temperatures you need.
Yes — we routinely build 10–50 pc samples before tooling release.
Send us your ring drawing
A sketch with outer / inner diameter, thickness, voltage and target temperature is enough to start.