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Fused Quartz Ring

Fused Quartz Ring

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High-purity fused quartz ring designed for laboratory support, spacing, positioning and high-temperature assembly applications.

The standard range covers selected combinations of outer diameter, inner diameter and thickness from compact 10 mm rings to larger 120 mm formats. The annular geometry provides an electrically insulating and thermally stable support element for furnace assemblies, quartz components and materials-processing setups.

Other OD, ID and thickness combinations can be manufactured on request, including components produced from a technical drawing for specific laboratory or furnace configurations.

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  • Dimensions (OD × ID × Thickness, mm)

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The standard range covers fused quartz rings from 10 to 120 mm outer diameter, with inner diameters and thicknesses selected for common laboratory support and spacing requirements. Ring dimensions should be selected according to the component being supported, the required central clearance and the available installation space. Alternative OD, ID and thickness combinations can be manufactured for non-standard assemblies.

Key Features

✓ High-purity fused quartz construction
✓ Solid annular geometry
✓ Low thermal expansion
✓ Standard OD from 10 to 120 mm
✓ Selected thicknesses from 1 to 3 mm
✓ Custom OD, ID and thickness available on request

Typical Applications

• High-temperature support and spacing
• Laboratory furnace assemblies
• Quartz tube and component positioning
• Thermal-processing fixtures
• Electrical insulation in laboratory assemblies
• Custom quartz component fabrication
Technical Specifications
Material High-purity fused quartz
Product Type Solid fused quartz ring
Reference SiO₂ Purity 99.99–99.9997%
Reference Maximum Temperature 1200°C
Linear Thermal Expansion 5.5 × 10−7 K−1
Thermal Conductivity 1.4 W·m−1·K−1
Standard Outer Diameter Range 10–120 mm
Standard Thickness Range 1–3 mm
Standard Sizes
OD ID Thickness
10 mm 7.5 mm 1 mm
20 mm 14 mm 1.5 mm
25 mm 15 mm 2 mm
30 mm 20 mm 2 mm
40 mm 25 mm 2 mm
50 mm 32 mm 2 mm
60 mm 40 mm 3 mm
80 mm 50 mm 3 mm
100 mm 52 mm 3 mm
120 mm 80 mm 3 mm
Technical Notes
• Avoid sudden temperature changes and localized mechanical impact during high-temperature use.
• Support the ring evenly where it is used as a spacer or structural support component.
• Select OD, ID and thickness according to the required clearance, contact area and mechanical support.
• Do not expose fused quartz components to hydrofluoric acid or fluoride-containing media.
Package Contents
1× High-Purity Fused Quartz Ring
Selected OD × ID × thickness
Selection & Custom Sizes
Select the outer diameter according to the available installation space, the inner diameter according to the required central clearance, and the thickness according to the required support or spacing function. Other OD, ID and thickness combinations can be manufactured on request. Custom fused quartz rings can also be produced from a technical drawing for specific laboratory, furnace or component-fabrication requirements.

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