It is a heat resistant silicone, polysilcosan based, air-curing acetate system sealing material.
Warning: Do not apply outdoors in rainy weather. Silicon contaminated areas and tools during application, 10 min. It should be cleaned with gasoline (white spirit) or alcohol. The application should be done between +5 °C and 40 °C. It can be stored in a cool and dry place in its original closed package for one year from the date of manufacture..