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