Glass Fiber Tape is woven from texturized e-glass fiber yarn on specialized looms. GFT is suitable for temperatures upto 550oC, and typically used as high temperature gaskets between flanges or simply a wrap on pipelines to reduce heat loss in high heat generating areas.
GFT can be pre-inserted with SS 304 to improve its tensile strength at elevated temperatures and it can also be coated with vermiculite or silicon rubber to make it 100% non-permeable. This makes it suitable for application in expansion joints and food industry.
Glass Fibre, which is used in weaving GFT is chemically known as boro-silico-alumino-calcic glass. It is a texturized e-glass yarn with a filament diameter of 9 micron.
It is chemically composed of the following:
SiO2 content (53-60%)
Alkaline Terrous Oxides [CaO, MgO] (20-25%)
TiO2 (0-3%), B2O3 (0-9%)
Alkaline Oxides [Na2O, K2O] (<2%)
Recommended Service Temperature → 550°C
Softening Point → 850°C
Melting Point → 1200°C
Loss on Ignition → <1%
Structure → Plain / Twill Weave (Closely Woven)
Default Reinforcement → None
Optional Reinforcement → SS 304
Color → White
Dimension & Customization
Standard Width → 25mm ~ 100mm
Standard Thickness → 2mm ~ 5mm
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