Kapton Tape Technical Datasheets
Specifications for our Kapton® Tape, which uses silicone adhesive. Choose 1, 2, or 5 mil polyimide film backing and a width on the product page. The original scanned technical sheets are preserved below.
Kapton® Tape specifications
| Specification | 1 mil (KT1) | 2 mil (KT2) | 5 mil (KT5) |
|---|---|---|---|
| Adhesive | Silicone | Silicone | Silicone |
| Film backing thickness | 1 mil | 2 mil | 5 mil |
| Total tape thickness | 2.5 mil | 3.5 mil | 6.5 mil |
| Tensile strength | 32 lbs/in | 53 lbs/in | 95 lbs/in |
| Elongation | 40% | 45% | 50% |
| Dielectric strength | 7,900 V/mil | 12,500 V/mil | 19,500 V/mil |
| Maximum recommended tape operating temperature | 500°F / 260°C | 500°F / 260°C | 500°F / 260°C |
| Roll length | 36 yards | 36 yards | 36 yards |
DuPont reports use of Kapton® Type HN film alone in applications up to 752°F / 400°C. That is not the operating rating for this adhesive-backed tape; the listed tape limit is 500°F / 260°C. Check the complete process before use near that limit.
For a different adhesive, see our acrylic polyimide tape; those listings are separate from the Kapton® branded product. Read the selection guide or thickness guide for help. DuPont™ and Kapton® are trademarks or registered trademarks of E.I. du Pont de Nemours and Company.
Original technical sheets
