HERUN manufactures ceramic seal rings, seal faces, sleeves, bushings and pump wear parts from drawings or samples. Alumina and zirconia options are available for pumps, valves and rotating equipment.
Mechanical seal buyers often need small, precise ceramic parts with hard surfaces, stable dimensions and clean edges.
Round rings, washers and seal faces for pump, valve and rotating equipment applications.
Tough, smooth ceramic sleeves and bushings for shafts, guides and sliding assemblies.
Cost-effective hard ceramic rings, spacers and insulating seal-related components.
Surface finish options for critical faces when flatness and smooth contact are required.
Drawing-based or sample-based review for repair companies and seal distributors.
Repeat production for seal manufacturers, pump companies and industrial equipment builders.
| Material | Best use | Typical advantage | Relative cost |
|---|---|---|---|
| Alumina Al2O3 | General seal rings, spacers, washers and insulation | Hard, stable and cost-effective | Low to medium |
| Zirconia ZrO2 | Precision sleeves, small rings and polished sliding parts | Higher toughness and smooth finish | Medium to high |
| Silicon carbide SiC | Severe wear, corrosion and demanding pump conditions | Very hard with strong wear resistance | High |
Typical values for comparison - request a datasheet for guaranteed specifications.
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Custom wear rings, sleeves and insulating components for pump assemblies and OEM designs.
Seal rings, faces, bushings and zirconia sleeves made to drawing or sample.
Replacement ceramic parts when original parts are worn, unavailable or need material improvement.
Alumina, zirconia and silicon carbide are common choices. Alumina is cost-effective and hard, zirconia offers higher toughness, and silicon carbide is often used for severe wear and corrosion.
Yes. A drawing is preferred, but HERUN can review sample photos and measured dimensions to discuss custom ceramic seal rings, sleeves and faces.
Flatness, parallelism, bore tolerance, polished faces, chamfers and the working media are important details for ceramic seal rings and mechanical seal components.
Ceramic seal components are not selected by outside diameter alone. Material, mating face, flatness, finish, concentricity, fluid, speed, pressure and thermal conditions can all affect performance. HERUN reviews these details before quoting alumina or zirconia parts.
Custom outside diameter, bore, thickness and working face for pump, valve or equipment assemblies.
Round wear components where clearance, concentricity and counterface contact are important.
Lapped or polished working faces subject to geometry and performance review.
Protective or guiding parts with fit-critical bores and outside diameters.
Insulating or wear-resistant rings with defined thickness and edge details.
Steps, grooves, holes or slots can be reviewed from drawings for feasible production.
| Condition | Common starting point | What must still be checked |
|---|---|---|
| Cost-sensitive wear and chemical stability | Alumina | Fluid, temperature, pressure, mating face and finish. |
| Tougher compact part or polished sliding contact | Zirconia | Temperature, grade, edge loading and counterface. |
| Electrical isolation in a ring or washer | Alumina | Voltage, wall thickness, temperature and contamination. |
| Unclear failure mode | Application review first | Send the used part, drawing and description of leakage, wear or fracture. |