Leak Sealer 
Protects against extreme temperatures 
Restores Maximum Cold The A/C Pro® Extreme Conditions refrigerant kit features a premium formula designed to protect against extreme temperatures and high use with a robust lubricant ingredient combo specifically designed to withstand high pressures seen with frequent A/C start-ups and stops. This formula seals common leaks in rubber components, and protects/extends the life of your A/C by eliminating acid and moisture build up. This kit comes with an easy to use digital gauge that guides you through the recharge process to remove the guesswork.