Custom Ceramic Rings & Seal Rings
Direct-factory precision machining of technical ceramic rings in Alumina, Zirconia, Silicon Carbide, and Silicon Nitride. From mechanical seal faces to semiconductor chamber isolation rings — manufactured to drawing specification with tight tolerance and fine surface finish.
Request a QuoteView Machining Capabilities±0.003 mm OD Tolerance
1 light band Flatness (Seal Face)
Ra 0.02 μm Surface Finish
±0.003 mm
OD Tolerance
±0.003 mm ID Tolerance
1 light band Flatness (Seal Face)
Ra 0.02 μm Surface Finish
0.0005 mm Roundness
1 light band Flatness (Seal Face)
Ra 0.02 μm Surface Finish
Ring Manufacturing Capabilities
OD up to 300 mm, tolerance to ±0.003 mm, roundness to 0.0005 mm, and seal face flatness to 1 light band. Surface finish down to Ra 0.02 μm. All rings 100% inspected with CMM, optical comparator, and flatness gauge. FAI and OQC reports provided.
Available Ring Materials
Select the ceramic material best suited to your application environment
Alumina (Al₂O₃)
Grades: 95%, 99.5%, 99.8%
Zirconia (ZrO₂)
Grades: Y-TZP
Silicon Carbide (SiC)
Grades: Sintered, Reaction-bonded
Silicon Nitride (Si₃N₄)
Grades: Sialon, SSN
Ring Types & Configurations
Mechanical Seal Rings
Precision flat-lapped seal faces and mating rings for pumps, compressors, and rotating equipment. Surface flatness to light band flatness.
Insulating Rings & Standoffs
Electrical isolation rings for semiconductor chambers, vacuum feedthroughs, and high-voltage bushings. Custom bore/OD profiles.
Bearing Rings & Races
Ceramic bearing inner/outer races and ball retainer rings for high-speed, high-temperature, and corrosive environments.
Wear Rings & Guide Rings
Sacrificial and protection rings for abrasive media handling, slurry pumps, and material transport systems.
Retention & Snap Rings
Precision-machined retaining rings with internal/external grooves, chamfers, and snap features for assembly integration.
Custom Flanged Rings
Flanged rings, stepped rings, and rings with cross-drilled holes or tapped features per engineering drawing.
Precision Capabilities
Actual achievable tolerances depend on material, geometry, feature dimensions, and drawing requirements.
Target Applications
Semiconductor Equipment
Pumps & Compressors
Electrical & Energy
Submit Your Ring Drawing for Review
Upload your 2D blueprints or 3D CAD files (.STEP / .IGS). Our engineering team will perform a DFM review and provide a competitive quote within 24 hours. Prototype rings available within 7-10 business days.
Submit Drawing for 24-Hour ReviewReady to Start Your Ceramic Component Project?
Send us your 2D drawings, 3D CAD files (.STEP / .IGS) or physical samples. Our engineering team will review manufacturability and return a competitive direct-factory quotation. Full NDA protection.
Email: james@korecera.com
Submit Your Drawing