{"product_id":"quartz-capillary-tube-7-12mm-100mm-length","title":"7-12mm OD Quartz Capillary Tube, 100mm Length - Thick-Wall Fused Silica for Industrial \u0026 Lab","description":"Product Description\n\nManufactured 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.\n\nWith 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.\n\nKey Features\n\nOD range: 7 \/ 8 \/ 9 \/ 10 \/ 11 \/ 12mm — custom ID and custom lengths available upon request\n\nTemperature tolerance: -198°C to 1200°C for continuous operation; resists thermal shock\n\nLow thermal expansion: Minimizes cracking under rapid temperature changes\n\nChemical \u0026amp; electrical properties: Acid-resistant, corrosion-resistant, and high-insulation\n\nEnd finishing options: Flat polished, sealed closed, or fire-fused rounded ends\n\nCustom Manufacturing\nWe accept custom orders for all dimensional parameters based on your drawings. 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