Our PTFE coated sewing threads are the ideal material for constructing filter bags. We offer fiberglass, para-aramid and quartz varieties to help you achieve the ideal temperature resistance. We also have the ability to twist in stainless steel and Inconel wire for failsafe operating temps to over 2,000 Fahrenheit. Impervious to most chemical compounds and resistant to moisture and rot, our threads will provide superior performance on your filter applications.