Dicor 710SA-Q Splicing Adhesive - 1 Quart - Ideal for Sealing and Repairing RV Roof Materials

OK, so the product comes with NO, '0', instructions printed on the label, and it is not referenced on the Dicor site as a product they sell. All it says on the can is repeated warnings about being combustible and toxic. Another seller says it is a 2 part product. I received only one part. Maybe it is good, maybe not, but there is no way to tell without using it on a flat roof first? That is just stupid, and I suspect in violation of a whole lot of product safety regs.