12-10 Female Heatshrink Disconnects - 25-Pack. Ancor heat shrink connectors offer heat activated adhesive built into the sleeve of the heat shrink tubing. When heated, these connectors form a water tight seal and the ultimate vibration and strain relief.. Features:. Tinned for corrosion resistance. Pure copper for maximum current flow. Brazed seam for maximum strength. UL listed and CSA recognized. WARNING: This product can expose you to chemicals including di(2-ethylhexyl)phthalate (dehp) which is known to the State of California to cause cancer, birth defects or other reproductive harm. For more information go to P65Warnings.ca.gov.