Megaloc is easily with a natural Bristle brush even at temperatures as debased as -25 â ° f, and performs over a temperature range of -50 â ° f to +400 â ° f. It leak-proof binary compound resistance to 12,000 psi and withstands gas pressure up to 2,600 psi. Megaloc is, non-hazardous, and non-flammable. It no lead, doughy metals, or volatile solvents.