Round Clear Fused Quartz Tubing OD 7mm ID 5.25mm Length 84mm Borosilicate 3.3 Laboratory

The Round Clear Fused Quartz Tubing is a precision drawn cylindrical glass tube available in optional borosilicate 3.3 glass material, engineered for laboratory, optical and fluid handling applications. With an outer diameter of 7mm, an inner diameter of 5.25mm and a length of 84mm, the tube offers a uniform wall structure that is free of bubbles and striae, ensuring consistent mechanical and optical performance along its full length. The borosilicate 3.3 composition delivers good light transmittance, low thermal expansion and strong resistance to thermal shock, making the tube suitable for applications involving temperature variation. Both ends are cut flat and smooth without chipping, allowing the tube to be installed directly into holders, fittings and optical assemblies with reliable sealing and alignment.

• Uniform tube wall without bubbles and striae: The precision drawn wall structure ensures consistent strength, transparency and dimensional stability along the entire 84mm length.
• Good light transmittance: The clear borosilicate body transmits light effectively, supporting use in optical light source sleeves and inspection systems.
• Low thermal expansion: The borosilicate 3.3 composition minimizes dimensional change under temperature variation, maintaining fit and alignment in assemblies.
• Thermal shock resistance: The tube withstands rapid temperature changes without cracking, making it reliable in heating and cooling cycles.
• Chemical stability: The material resists common acid and alkali corrosion, keeping the tube clean and durable in laboratory environments.
• Flat cut ends without chipping: Smooth end faces allow secure mounting and clean sealing without debris or sharp edges.

The Round Clear Fused Quartz Tubing is a versatile component used across laboratory, optical and industrial systems. In the laboratory, it serves as a reaction test tube for chemical experiments, offering a clean, transparent and chemically resistant vessel for sample processing. In optical equipment, the tube works as a light source sleeve, protecting lamps and guiding light along the optical path with minimal interference. The tube is also used as a fluid guide pipeline for transporting gases and liquids in analytical instruments, where its smooth bore and stable dimensions ensure consistent flow. For testing equipment, it functions as a protective sleeve that shields sensitive components from contamination and mechanical damage. Additionally, the tube can be used as a micro sample storage tube, providing a compact and inert container for small quantities of valuable samples.

• Low thermal expansion and thermal shock resistance: The borosilicate 3.3 material keeps the tube stable under temperature fluctuation, reducing the risk of breakage in demanding processes.
• Excellent chemical stability: Resistance to common acids and alkalis ensures a long service life and clean operation in laboratory environments.
• Good optical clarity: The bubble-free and striae-free wall provides consistent light transmission for optical and inspection applications.
• Precise and consistent dimensions: Uniform wall thickness and accurately controlled OD, ID and length support reliable installation and interchangeability.
• Safe handling: Flat, chipping-free cut ends reduce the risk of injury and protect tubing, seals and optical components during assembly.