PTFE Coated Fiberglass Sewing Thread is made from continuous fiberglass filaments that are heat resistant, chemical resistant, and strong. The fiberglass is also coated with a PTFE also named Teflon finish to improve sewability, and reduce friction.
Fiberglass Coated Stainless Steel Sewing Thread made by glass fibre and stainless steel. Fiberglass insert stainless steel making it suitable for many industrial applications and minimizing the tendency to kink, strip-back or break like other very high temperature threads.