The shrink tunnel TUN-1540 supplies heated air to an adjustable height chamber for the purpose of shrinking a polymeric film on top of a container cap which is normally know as tamper proof foil shrink seal. This tunnel includes an electronically controlled conveyor for carrying container through the chamber. Rugged Powder Coated Steel Construction High Density Roll Conveyor for Optimal Container Balance. Full Shrinkage from All Sides, Including Bottom