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Removable fused quartz tube end cap

Removable fused quartz tube end cap

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High-purity fused quartz tube plug designed for closing or partially isolating the end of laboratory furnace and process tubes during thermal work. The hollow quartz body is finished with an integrated loop handle for straightforward insertion and removal.

Available in nominal diameters from 20 to 90 mm, the range covers common laboratory tube sizes and is suitable for furnace setups, thermal-processing assemblies and other high-temperature quartz systems where a removable end closure is required.

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This range of fused quartz tube end caps covers nominal diameters from 20 to 90 mm for use with laboratory furnace and process-tube assemblies. The hollow body provides a removable quartz closure, while the integrated loop offers a practical handling point for positioning and removal. Select the diameter according to the mating tube and the required fit within the experimental setup.

Key Features

✓ High-purity fused quartz construction
✓ Hollow removable end-cap design
✓ Integrated quartz loop handle
✓ Reference maximum temperature of 1200°C
✓ Nominal diameters from 20 to 90 mm
✓ Custom dimensions available on request

Typical Applications

• Laboratory tube furnaces
• Furnace-tube end closure
• Thermal-processing assemblies
• Controlled-atmosphere experimental setups
• High-temperature materials processing
• Quartz process-tube assemblies
Technical Specifications
Material High-purity fused quartz
Product Type Removable fused quartz tube end cap
Construction Hollow body
Handling Feature Integrated loop handle
Reference Maximum Temperature 1200°C
Standard Diameter Range 20–90 mm
Standard Sizes
Nominal Diameter
20 mm
30 mm
40 mm
45 mm
50 mm
60 mm
65 mm
70 mm
80 mm
90 mm
Technical Notes
• Confirm the mating tube dimensions and required clearance before selecting the end cap diameter.
• The end cap is intended as a removable quartz closure and should not be considered a pressure-rated or hermetic sealing component.
• Avoid rapid temperature changes and mechanical impact to reduce thermal and mechanical stress.
• Handle the component using the integrated loop only when it has cooled to a safe handling temperature.
Package Contents
1× High-Purity Fused Quartz Tube End Cap
Integrated loop handle — selected nominal diameter
Selection & Use
Select the nominal diameter according to the mating furnace or process tube and the required insertion clearance. Where a specific fit or non-standard geometry is required, provide the relevant tube dimensions before ordering so that a suitable quartz end cap can be selected.

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