Waterproof, impact resistant and high strength. Because this product is so fast, weâ€™ve included a blue dye. When you mix the product quickly, youâ€™ll know youâ€™re ready to use it when the blue dye disappears (about 15 seconds). All purpose. Strength 1250 psi.Please note: We are not allowed to sell butane or solvent based products to persons under the age of 18.