For making formed-in-place gaskets. Conforms to most mating surfaces to deliver a positive airtight seal. Replaces preformed gaskets. Repairs household electrical cords and plugs. For automotive applications. Flexible, waterproofs, seals and insulates will not chip, crack or crumble. Stays flexible from -65 to 400 deg F. 6 to 8 min working time. 45 to 60 min tack-free time, 24 hr cure time. 100% silicone rubber.