Dear Sir, We need a silica yarn to use as tie strings in gas mantles. Do you have a product developed specifically for this application. Gas Mantles are used in lamps / lanterns used for camping. The basic specifications of the yarn we require are as follows: Description: Polished Silica Core Spun Yarn Diameter: 0.5mm approx. Tex: 190 approx. Tensile Strength: 60 Newtons or more Elongation: 2.8% Temperature Limitations: Sheath: 150C Continuous Core: 950C Continuous I look forward to hearing from you. Regards, Show More