Coats Firefly™ Fil is a continuous filament 100% meta-aramid sewing thread that is made using a vertically integrated aramid manufacturing system, and is uniquely engineered to provide exceptional flame, heat and electric arc resistance.
Coats Firefly Fil provides protective garments with the highest level of security as it offers outstanding heat resistance against heat up to flame temperatures of 371ºC.
It is also certified to meet all safety regulatory standards including NFPA, EN and US military specification AA50195.
Disclaimer
To drive your hidden costs down, talk to Coats. From thread audits in pre-production to the latest technical bulletins, we’ll provide support that achieves measurable results. For more information, talk to your Coats representative today.
Since conditions and applications vary considerably in the use of a product, the customer and/or user should assure themselves that the product meets end customer requirements and is suitable for the intended end use. Coats accepts no liability for unsuitable or improper use or application of products.
Information provided is based on current averages and should be taken only as indicative. Coats accepts no liability for the preciseness and correctness of the information provided.
Product information sheets are updated from time to time, please be sure you are referring to the most recent publication. Coats supports customers with advice on individual applications on request; if you have any questions or concerns, please contact us.
Coats® is a registered trademark of J. & P. Coats Limited. Firefly™ is a trademark of J. & P. Coats Limited. © Copyright reserved 2025.