So I've got a design...but I need a material. I need a heavy duty material that can withstand 3 to 4 tons of pressure in a machine or automotive environment and can be 3-d printed. Something that is relatively flame retardant or resistant, waterproof or resistant, does not degrade rapidly, will not degrade when coming into contact with oils or solvents. Am I asking for too much? The size would really only need to be about 6" in diameter?

Can you all help me find a readily available material that I can use and a 3-d printer that can produce the part?

Thanks!