THIS MUST GO FED EX.  CAN NOT GO USPS.

Seals Seams or Openings of 1/8"or Smaller, Seals Mechanically Fixed Joints in Window Frames, Self-Leveling With Controlled Flow

Our fast-drying Small Joint Seam Sealers are formulated to seal seams in metal window frames, storm windows, miter cut screens, etc.  For best adhesion, application should be clean and dry surfaces. Clear color and will fit in caulking gun.

NOTE:  This must go FED EX