3M nickel on copper-plated PET ripstop fabric tape 2191FR has a 5.2 Mil nickel on copper-plated polyester ripstop fabric with conductive acrylic pressure sensitive adhesive and liner, this fabric tape is UL recognized for flame retardancy per UL 510. - Polyester ripstop fabric backing provides excellent flexibility and conformability, mechanical strength and light weight. Polyester ripstop fabric is also easily handled (minimizes finger laceration) and converted (slitting and die cutting).