Coats® Firefly™ Sewing Thread Shade (see colour card):77RTQ Brown HT750 sleevings are made using

HT750 sleevings are made using chemically modified glass yarns rated to 750°C in optimum conditions

which resist  tearing both before and after heating

this seal provides exceptional adaptability and chemical resistance

Unlike conventional synthetic braided packings

Precise thickness

Coats® Firefly™ Sewing Thread Shade (see colour card):77RTQ Brown HT750 sleevings are made usingFirefly sewing thread is made from 100% meta aramid fibre with a high melting point of 371C. Exceptional flame and heat resistance; does not melt or drip up to the melting point. Unique spinning quality with 5 times lower fault levels and 100% traceability. Special dyes used for good wash fastness and minimal lot to lot colour variation. Flame resistance and colour consistency throughout multiple cycles of laundering and dry cleaning. Unique