HERUN Ceramics supplies custom alumina rods, ceramic seal rings, zirconia sleeves and technical ceramic components for high-wear, high-heat and insulating applications.
A good ceramic part starts with the right material. Use the guide below to narrow choices before confirming shape, tolerance and finish.
Commonly selected for electrical insulators, ceramic rods, tubes, plates, pump parts and fixture components. 95% alumina balances performance and cost; higher-purity alumina improves insulation and chemical reliability.
Zirconia ZrO2
Use for pump seals, shafts, sleeves, medical-style components and parts that need fracture toughness.
Like the reference article, this section gives buyers a technical reason to trust the page: alumina is not just a product name, it is a material family with purity grades, processing choices and application trade-offs.
| Grade | Best For | Trade-off |
|---|---|---|
| 95% Al2O3 | General wear parts, insulators, tubes and rods | Best cost/performance |
| 99% Al2O3 | Higher insulation, cleaner processes, precision parts | Higher cost and harder machining |
| Custom | Special geometry, tolerance or finish requirements | Quote from drawing |
Start from a standard ceramic shape, then specify material, purity, size, tolerance, surface finish and quantity.
Custom alumina ceramic rods for guides, plungers, pins, shafts and insulating fixtures.
Insulating tubes, thermocouple sheaths, spacers and precision sleeves.
Wear plates, insulating substrates and high-temperature supports.
Seal faces, spacers, sleeves and pump components for mechanical seal applications.
Small precision ceramic caps, spray nozzles and custom parts made from drawings or samples.
A broader range of alumina and zirconia parts for wear, insulation, sealing, printing machinery, fixtures and high-temperature equipment.
Multi-hole insulating tubes for high-temperature and electrical applications.
Wear-resistant rods, sealing pins and spray-gun ceramic tips.
Insulating fasteners for fixtures, high-wear assemblies and special equipment.
Sharp, wear-resistant ceramic rings for pad printing ink cup systems.
Machined blocks, wear plates and positioning parts for industrial machinery.
Insulating plates, substrates and round ceramic discs in custom sizes.
HERUN components are selected where metals and plastics wear, corrode, conduct electricity or deform under heat.
These examples show how buyers usually work with HERUN: send a drawing or sample, confirm material and tolerance, then move from prototype to repeat order.
A European equipment customer needed custom alumina ceramic rings for production trials. HERUN supported sample review, grade confirmation, updated quotation and repeat-order preparation.
View alumina ring capabilityA U.S. electronics customer tested drawing-based ceramic parts, confirmed the parts worked in the assembly, then placed a production order with split deliveries.
Request custom ceramic partsFor wear-resistant liner projects, HERUN reviews drawings, ceramic grade, tolerances and working conditions before quoting zirconia parts for harsh contact surfaces.
View zirconia capabilityMost custom ceramic buyers care less about a long catalog and more about whether the supplier can understand drawings, respond clearly and support small trials before batch production.
"The parts appear to be working, so we want to place an order."
U.S. electronics manufacturing customer"We have received the rings and are going to test them in production."
European equipment customer"There is nothing wrong with the rings; the issue was that we had designed the ring incorrectly."
Repeat prototype ceramic ring customerSend a drawing, sketch or sample photo. We confirm the material, geometry, tolerance and finish before quoting.
Temperature, wear, insulation, chemical exposure and load conditions.
Alumina or zirconia matched to the duty. SiC and AlN categories will return after product photos are ready.
Pressing, sintering, CNC grinding, lapping, polishing and inspection.
Prototype or production quantities with inspection and export support.