Seals on contact. Clear compound withstands changes in climate, toughens with age, never becomes brittle. Seals leaks in gas tanks (without draining contents), radiator and heater hoses, etc. Acts as a glue, cement, and sealant with unlimited application. Size: 2 oz \nDries Clear: Yes \n : WARNING: This product can expose you to chemicals including acetaldehyde and vinyl chloride which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.p65warnings.ca.gov. -