Lanmar #Copper4 is a 4 mil copper PTFE coated fiberglass tape with a silicone adhesive and yellow release liner. The copper-colored PTFE coating delivers the non-stick, chemically resistant, and high-temperature properties of PTFE with a conductive copper appearance. It is well suited for applications where EMI shielding, RF grounding, or heat reflection are required alongside reliable adhesive bonding.

The silicone adhesive provides strong bonding to metal, PTFE surfaces, and most industrial substrates across a wide temperature range. Rated from -100 to +550°F. Dielectric strength: 4500V.

Specifications: 4 mil PTFE backing / 6 mil total thickness. Break strength: 100 lb/in. Elongation: <5. Adhesion: 35 oz/in.

Includes a yellow release liner for clean handling and precise application without adhesive contact during positioning.

Common applications include electronic assemblies, conductive shielding straps, heat-reflective barriers, and grounded surface bonding. Supplied in roll form with release liner. Available custom slit to width.