7-12mm OD Quartz Capillary Tube, 100mm Length - Thick-Wall Fused Silica for Industrial & Lab

Product Description Manufactured from ultra-high purity fused silica (99.99%~99.999% SiO₂) , this 7–12mm OD quartz capillary tube provides reliable thermal, optical, mechanical, and chemical performance for demanding industrial and scientific environments. With a standard length of 100mm and a thicker wall than our 1–6mm series, these hollow quartz tubes are ideal for optical instruments, chemical laboratories, high-temperature reaction vessels, semiconductor testing, and fiber optic accessories. Key Features OD range: 7 / 8 / 9 / 10 / 11 / 12mm — custom ID and custom lengths available upon request Temperature tolerance: -198°C to 1200°C for continuous operation; resists thermal shock Low thermal expansion: Minimizes cracking under rapid temperature changes Chemical & electrical properties: Acid-resistant, corrosion-resistant, and high-insulation End finishing options: Flat polished, sealed closed, or fire-fused rounded ends Custom Manufacturing We accept custom orders for all dimensional parameters based on your drawings. Professional shock-absorbing packaging ensures safe international delivery, and we stand behind our products with responsive after-sales support.