Half Round Fused Silica Tube OD 4mm ID 2mm Length 50mm Wall Thickness 2mm

The Fused Silica Half Round Tube is a precision semicircular component with an outer diameter of 4mm, an inner diameter of 2mm, a total length of 50mm and a wall thickness of 2mm, manufactured from high-purity fused silica. The flat half-section is cut cleanly without chipping, while the inner and outer walls are polished smooth for reliable optical and mechanical contact. With high UV transmittance, an ultra-low thermal expansion coefficient and excellent resistance to high temperature and acid and alkali, the tube delivers stable performance in demanding optical and laboratory environments. Its half-round geometry simplifies sample loading and unloading, making it a practical component for miniature optical and experimental systems.

• High-purity fused silica material: The pure material delivers clean optical performance and consistent quality.
• Flat half-section without chipping: The clean cut face provides a stable seating surface for fibers and samples.
• Polished smooth inner and outer walls: Smooth surfaces protect workpieces and maintain uniform light behavior.
• High UV transmittance: Excellent ultraviolet transmission supports spectral and UV optical applications.
• Ultra-low thermal expansion: High temperature and acid-alkali resistance, combined with great thermal stability, prevent cracking under thermal cycling.

The Fused Silica Half Round Tube is designed for miniature optical and laboratory systems that require precise, open-access tubing. It is widely used as a limiting part for miniature optical paths, guiding and constraining light beams with a stable open channel. In fiber systems, the tube serves as a fiber protection groove, shielding fibers while allowing easy placement and removal. The component is also adopted as a sample holder for spectral testing, providing a clean and inert platform for small samples. In illumination systems, it works as a light homogenizing accessory for mini light sources, distributing light evenly. Additionally, the tube functions as a micro experimental carrier in the lab, supporting small quantities of material during analysis.

• Half-round structure for easy loading and unloading: The open semicircular channel simplifies placement and removal of samples and fibers.
• High machining precision: Tight dimensional control ensures accurate fit and alignment in assemblies.
• Crack-resistant under temperature alternation: Excellent thermal stability prevents damage during heating and cooling cycles.
• No impurity precipitation at high temperature: The pure material keeps processes and samples uncontaminated in long-term service.
• Stable and consistent optical performance: Uniform material and surface quality deliver repeatable results across batches.