Gasket Sealant All Purpose High Performance 4 oz. Blue Temp Range -90 Degrees to 450 Degrees F Specific Gravity 0.85 Viscosity Paste Flash Point 170 Degrees F Begins to Harden Immediate Substrates Aluminum Black Iron Brass Copper Stainless Steel Galvanized Steel and On Plastics Including PVC and CPVC Flexible Seal Which Will Not Harden Crack Crumble or Shrink Improves Seal on Threads Standards Meets Mil Spec Mil-S-45180 D Includes Brush in Cap