RADIATOR SEAL - FAST-ACTING, EFFECTIVE AND COMPLETELY SAFE RADIATOR LEAK SEAL WITH ALUMINUM MICROPARTICLES; DOES NOT HIDDEN COOLANT CIRCULATION AND THUS DOES NOT REDUCE THE THERMAL EFFICIENCY OF THE RADIATOR; MIXABLE WITH ALL TYPES OF COOLANTS; WEIGHT 18.5G; ONE PACK IS SUFFICIENT FOR A 10-LITER SYSTEM.