Nitrile / EPDM foam Insulation tapes During insulation foam fixing on ducts or on pipe, a small gap is created at every joint, to prevent energy loss from the gap, 2 /3 wide self-adhesive Nitrile or EPDM foam tape, in 3 mm Thickness, is widely used by HVAC contractors. It is also used to wrap it on Cold or hot piping and fittings. It is excellent for preventing condensation on chilled water and refrigeration piping system. This self adhesive tape firmly adheres on all metals due to use of high performance acrylic pressure sensitive adhesive..