Alumina Glazing Parts & Sealing Parts Series
Glazed alumina parts carry a high-temperature glass glaze over the substrate, giving a smoother surface, better airtightness and corrosion resistance. Surface porosity is reduced while insulation and anti-fouling performance improve — widely used in sealing, insulating and corrosion-resistant applications.
Alumina Glazing Parts & Sealing Parts Series
Glazed alumina parts carry a high-temperature glass glaze over the substrate, giving a smoother surface, better airtightness and corrosion resistance. Surface porosity is reduced while insulation and anti-fouling performance improve — widely used in sealing, insulating and corrosion-resistant applications.
What we need to quote
Drawing (PDF / DWG / STEP), material grade, quantity and surface finish. No drawing? Send a sample or a sketch and we will convert it.
Series Photos
Alumina Glazing Parts & Sealing Parts Series
Glazed Alumina Ceramic Tube
Glazed Alumina Ceramic Massage Head
Alumina Ceramic Spacer
Alumina Ceramic Sealing Part
Glazed Alumina Ceramic Tube Fitting
Glazed Alumina Ceramic Massage Head (Accessory)
Alumina Ceramic Valve
Insulating Glazed Electronic Ceramic Suction NozzleAlumina Glazing Parts & Sealing Parts Series
Glazed alumina parts carry a high-temperature glass glaze over the substrate, giving a smoother surface, better airtightness and corrosion resistance. Surface porosity is reduced while insulation and anti-fouling performance improve — widely used in sealing, insulating and corrosion-resistant applications.
Available processes and finishes
- Dense smooth glaze down to Ra≤0.1 μm
- Good match with metal and glass packaging; reliable hermetic sealing
- White, black and colored glazes customizable
Shipment inspection
Dimensional sampling report with every batch; full dimensional report, roughness report, insulation resistance test and certificate of conformance on request.
Key Features
- Smooth surface: flat glossy glaze, Ra≤0.1 μm, resists dust and scaling
- Excellent airtightness: surface pores sealed, performs well in vacuum and sealing service
- Strong corrosion resistance: withstands acid, alkali and humidity for long service life
- Higher insulation: the glaze layer further raises surface dielectric strength
- Custom glaze colors: white, black and colored glazes available
Where you will typically find this part
Sealing devices
Vacuum sealing parts, gas sensor sealing ceramics
Home appliances
Insulating seals for thermostats, water heaters and water dispensers
Chemical equipment
Corrosion-resistant pump and valve seals, chemical insulating parts
Outdoor equipment
Outdoor electrical insulators, anti-pollution-flashover ceramics
Plumbing & sanitaryware
Ceramic valve cores, sealing rings
Machining capability & tolerances
The ranges below are routinely achievable. Real tolerances depend on shape, size and material — send the drawing and we confirm each item.
| Item | Standard | Precision |
|---|---|---|
| Dimensional tolerance | ±0.05 mm | ±0.02 mm |
| Flatness | ≤ 0.01 mm | ≤ 0.005 mm |
| Surface roughness | Ra 0.4 μm | Ra 0.2 μm |
| Minimum hole diameter | φ 0.3 mm | φ 0.15 mm |
| Parallelism / perpendicularity | 0.02 mm | 0.01 mm |
Precision grade requires drawing review and may add operations and cost.
Forming, machining & finishing
- Dry pressing
- Isostatic pressing
- Injection moulding
- Hot die casting
- Extrusion
- Diamond grinding
- Surface / centreless grinding
- Ultrasonic machining
- Laser cutting
- CNC engraving
- Polishing to Ra 0.2
- W/Mo-Mn metallisation
- Nickel / gold plating
- Glazing
- Ceramic-to-metal brazing
What we need to quote
Drawing (PDF / DWG / STEP), material grade, quantity and surface finish. No drawing? Send a sample or a sketch and we will convert it.
Send Drawing for QuoteSix things to include in your RFQ
The more complete the information, the faster and more accurate the quote. No drawing yet? Start with a sample or a sketch.
Drawing
PDF, DWG or STEP, with critical dimensions and tolerances marked.
Material grade
E.g. 99% alumina or zirconia. Not sure? Describe the operating conditions and we will recommend.
Quantity
Sampling quantity and expected volume, so we can quote tiered pricing.
Tolerance requirements
Dimensional and geometric tolerances on critical features; non-critical faces can be left open.
Surface & post-processing
Roughness, metallisation, glazing, plating or brazing requirements.
Lead time & application
Target delivery date and end use, so we can match process and capacity.
A photo of the part or a short note on the operating conditions speeds up the engineering review.
FAQ
Can you work without a drawing?
Yes. Send a sample, a sketch or clear photos with the critical dimensions marked and our engineers will produce a drawing for your approval. Confidential drawings can be covered by an NDA first.
What is the minimum order quantity?
Standard MOQ is 10 pieces, with better unit pricing from 50 pieces. For R&D we can evaluate 1–5 piece sample requests case by case.
Can I get a sample first?
Standard sizes can be supplied from stock as sample chips. Custom sizes carry a sampling charge, which is fully credited against your volume order.
What is the lead time?
Samples 10–15 days after drawing approval, volume 4–6 weeks. Metallisation or ceramic-to-metal brazing usually adds another 1–2 weeks.
Is the sampling charge deductible?
Yes. The sampling charge for custom sizes is credited in full against the subsequent volume order; standard sample chips are free (freight at cost).
How small a hole or how thin a wall can you make?
Routinely φ0.15 mm minimum hole and 0.3 mm minimum wall. The real limit depends on material, part size and hole depth, so we assess it from your drawing.
Do you offer metallisation and ceramic-to-metal sealing?
Yes — W/Mo-Mn metallisation, nickel/gold plating and ceramic-to-metal brazing. Helium leak rate and similar targets can be agreed to your specification.
What are the payment terms?
T/T: 30% deposit, 70% before shipment. Monthly settlement can be arranged for long-term partners.
Who handles export documents and shipping?
We handle the full export document set (invoice, packing list, certificate of origin, etc.) and arrange logistics, or ship through your nominated forwarder.
How is quality verified, and what if it fails?
You get a dimensional report and photos before shipment, and third-party or video inspection can be arranged. If incoming inspection fails, we rework or replace free of charge.
Related products
Not the model you need?
Send us the drawing, a photo of the sample or the operating conditions, and our engineers will recommend a material and process.