10 Best High Temperature Tapes
for October 2023

The APT Polyimide tape had excellent toughness and insulation, which was impressive considering how thin it was. Its low tackiness was excellent, and our sample successfully bonded to a variety of surfaces. Because APT tape is extruded, it retains its shape, so you can roll it tightly without crushing it. Our sample also bonded to a variety of materials, including metal, glass, and ceramic, and it maintained its tough, flexible properties through repeated heating. The tape is also very flexible, so it's easy to apply. The adhesive was strong enough that it held our sample together when subjected to rigorous force. The APT tape also didn't leave any residue, and there were no visible air bubbles when we applied it into crevices.

The 4 pack of Elegoo high temperature tape is a great value, offering 4 of the largest sizes that we tested for soldering and electrical insulation. The tape is thick and rigid, and it resists heat well, although not quite as well or as reliably as the T3 tape we used with our previous top pick. The Elegoo tape's adhesive is thick and strong, but it's not as reliable as the T3 adhesive. The Elegoo tape's electrical insulation was excellent, and it's a reliable choice for splicing wires and masking circuit boards. The small sizes are a good value, and all three of the larger sizes are a good value. The smaller sizes are better suited for short term use, and the large ones should last you a long time. The Elegoo tape is about half the cost and a quarter of the weight as our former top pick, the T3 tape.

Bertech's high-temperature polyimide tape is ideal for a range of applications, including high-temperature sealing and insulation, high-temperature solder mask, PCB applications, and high-temperature masking. It's thick enough to resist penetration by molten solder and withstand temperatures of 500°F (260°C), and it's tough enough to keep its shape even when stuck to irregular surfaces. It's easy to work with, too: thanks to its flexible adhesive, the Bertech high-temperature polyimide tape is easy to work with, and it's flexible enough to conform to irregular surfaces. However, it's somewhat brittle, so it's best used on flat, clean surfaces, and it's prone to tearing, so use it with care.

This heat-resistant tape, once pressed, will remain pressed. However, its water resistance rating is limited to 280C. That's also why it's best used for heat-resistant applications, such as hot pressing and soldering. The tape's coloring is blue, which makes it easier to identify in complex situations. The tape's width is 0.9 mm, which gives you more options. The adhesive is on the reverse side of the tape, so it's easy to apply. The tape is thick enough to remain flat when pressed, but thin enough not to affect the heat transfer. The tape's adhesive is strong enough to withstand 280C, but it's not necessarily strong enough to withstand the heat from soldering irons or hot presses. The tape's adhesive is strong enough to resist peeling. However, it is not strong enough to resist water. The tape withstands 280C, so it's suitable for heat-resistant applications. The tape is too thin to resist water.

This tape is thin and sticky, so it sticks well and stays in place. It's durable, too, and won't tear easily. The backing is pressure sensitive, so it's easy to apply and remove, and the tape itself is thin enough to slide over things easily. It resists heat well, up to 300 degrees Fahrenheit, so it's useful for shielding cables from heat-radiating equipment. The reflective side has a shiny, metallic-silver look, so it's useful for hiding equipment and wires. The tape is thick enough to use on roofs, but it's also thin enough to use on inner walls and behind cabinets. The adhesive burns off over time with consistent heat exposure, so we recommend manually bonding with hose clamps or stainless steel zip ties for long term use.

3M Glass Cloth Electrical Tape is one of the most durable, reliable, and versatile electrical tapes you can buy. It can be used for a wide range of tasks, from insulating wire harnesses to wrapping wire, to sealing up cracks and gaps in walls and ceilings. The tapes' tough rubber adhesive provides strong, long-lasting bonds. The 3M Glass Cloth Electrical Tape 27, ½ in x 66 ft, 1 Roll is one of the strongest and thickest tapes we tested. It provided more than enough insulation for our tests. However, it is not very conformable, and most applications require more than 1 roll. 3M Glass Cloth Electrical Tape is also solvent resistant, so it resists most chemicals. It performed well in tests simulating boiling-water and steam exposure, as well as exposure to oils, chemicals, and salt water. The 3M Glass Cloth Electrical Tape 27, ½ in x 66 ft, 1 Roll is heavier and a little more expensive than our pick, but most users will find that the extra thickness and insulation strength are well worth the extra cost.

When you're sitting in front of a fireplace, the last thing you want to do is get out a tape measure, stick it down your chimney, and risk falling down it. That's why 3M's High Temperature Flue Tape is such a godsend. This heat-resistant tape seals air leaks and stops flue gases from escaping, saving you money on heating costs. The tape is 15 feet long, and it's strong enough to seal most air duct openings without putting major stress on your chimney. Installation is easy: Simply cut the tape to your desired length, stick it in your chimney, and secure it to the inside with a utility knife. The tape is thin enough to pass through most duct openings, and it sticks to itself, so it's easy enough for a novice to install. The tape is 600 degrees Fahrenheit resistant, so it's safe to use in extreme weather conditions. It's also made in the U.S., so it's guaranteed to last longer and perform better than those made overseas.

The 3M 3361 Silver High-Temperature Stainless Steel Tape is a 1-inch-wide tape made of stainless steel foil. This tape has a solid construction, and it's easy to apply. It also performs well, remaining firmly in place even after coming in contact with salt water. The tape is non-magnetic, so it's suitable for use in environments where magnets can create safety hazards. When it's no longer needed, the tape can be removed in one piece, so there's no need to peel it back. The non-magnetic acrylic adhesive system of this safety tape also allows for increased thickness, so it's ideal for sealing and protecting stainless steel surfaces. This tape can also be used in electroplating or to increase the thickness of surfaces.

APT's glass tape is stronger than most standard electrical tape, and it's a bargain at only $2.99 per roll. It features a unique adhesive that is designed for high temperatures, so it's ideal for powder-coating masking, sand blasting, and high temperature applications. The tape has a solid back and strong cloth layer, so it sticks and peels easily, but it won't tear or flake when you remove it. The glass tape is 7 mil thick and 260°C rated, so it's thicker than most tape. It's white, so it's a good choice for masking high-temperature powder coating systems. The tape, like all the APT tapes we've tested, sticks well, and is easy to apply and remove. The tape has a five-day working shelf life, and APT offers a generous 30-day return policy.

The A-SUB 4 Rolls Heat Resistant Tape is a relatively expensive heat-resistant tape that's best suited for sublimation printing. This tape has a high melting point, so it's resistant to the higher temperatures used in heat press printing. The tape is thick and durable, and it's easily peeled off without leaving residue. The adhesive is strong, and tape sticks well. The tape is 4 rolls in a pack, and it's available in 3/8/10/12mm (1/8",3/8",2/5",1/2") in width, 33m (108ft./36 Yard) in length. The A-SUB 4 Rolls Heat Resistant Tape is a flexible tape, and it's suitable for large surfaces. It's easily bent and curved, and it's suitable for heat press printing.