Rectorseal 97606 4-Ounce Ep-400 Epoxy Putty RECTORSEAL ep-400 epoxy putty, 2 oz RECTORSEAL epoxy puttyis a Pre-Measured, high grade epoxy and hardener formulated together in one stick, making it easy to break off the amount needed for each repair This is manufactured in United States Pressure tested to 1300 psi Can withstand temperatures continuously up to 500-Degree F Can even harden under water Contains no asbestos No special tools needed