Shurtape PC-657 Premium Grade Duct Tape is a 14.5 mil premium-grade co-extruded cloth duct tape used in high performance motorsports applications, pre-manufactured housing and RV assembly, sealing HVAC ducts, and protection during metal peening operations. Shurtape PC-657 Duct Tape has excellent adhesion and tack characteristics, can withstand extreme temperature fluctuations, and is very durable.