High Temperature Tapes
As thermal problems come in a wide variety of shapes and
sizes, so to must protective tapes. Polyonics understands
the chemistry of temperature. How it works, how it affects
materials, components and products. Most importantly, Polyonics
understands how to engineer composite materials so they remain
dimensionally stable at high temperatures and continue to provide
superior performance.
Polyonics single coated, linered tapes are offered in three materials; polyimide, polyester and aluminum. Each material comes in a variety of configurations to provide the necessary level of thermal protection for a wide variety of applications. Electrostatic dissipative (ESD) and halogen-free flame retardant tapes are also available.

Dimensional Stability
The performance of engineered tapes is heavily influenced by temperature and its impact on the tape’s dimensions. The chart at right illustrates this relationship for polyimide (PI) and polyester (PET) tapes. The less dimensional change a material exhibits at elevated temperatures the better it will perform at those temperatures. Careful selection of the right tape for each application is imperative.
Product Selection
Click on name to download technical bulletin.
| Name | Feature | Film/face | Surface | Adhesive | Liner | Description/Application |
|---|---|---|---|---|---|---|
| XT-620 | Hi temp | 1 mil amber polyimide | - |
1 mil hi-temp acrylic | PCK | High temperature insulation. PCB masks during wave solder, electrical insulation between flex circuits and thermal insulation for electrical motors. -40 to 932°F (-40 to 500°C) |
| XT-621 | Hi temp | 1 mil amber polyimide |
- |
1 mil hi-temp white silicone | PET | Ultra high temperature insulation. PCB masks during wave solder, low profile electrical and thermal insulation of higher and peak temperatures. -100 to 1000°F (-73 to 537°C) |
| XT-622 | ESD | 1 mil amber polyimide | ESD | 1 mil hi-temp acrylic | PCK | Low surface resistance, static dissipative (105-109 Ohm) Can be used for low profile PCB masks, flex circuits, and electric motors. -40 to 572°F (-40 to 300°C) |
| XT-623 | ESD | 2 mil amber polyimide | ESD | 2 mil hi-temp acrylic | PCK | Low surface resistance, static dissipative (105-109 Ohm) Ideal for PCB masks, flex circuits, and electric motors with rough or textured surfaces. -40 to 572°F (-40 to 300°C) |
| XT-624 | Flame Retardant | 1 mil amber polyimide |
- |
1 mil FR acrylic | PCK | Halogen-free flame retardant, high temperature - meets UL94 VTM0. Excellent electrical and thermal insulation and prevention at flame propagation between electric devices and components. -40 to 572°F (-40 to 300°C) |
| XT-625 | Flame Retardant | 2 mil amber polyimide |
- |
1 mil FR acrylic | PCK | Halogen-free flame retardant, high temperature - meets UL94 VTM0. Excellent electrical and thermal insulation and prevention at flame propagation between electric devices and components. -40 to 302°F (-40 to 150°C) |
| XT-626 | Flame Retardant/ESD | 1 mil amber polyimide | ESD | 1 mil FR acrylic | PCK | Halogen-free flame retardant, high-temperature, low surface resistance (105-109 Ohm) static dissipative - meets UL94 VTM0. High temperature tape where flame initiation is due to static discharge. -40 to 572°F (-40 to 300°C) |
| XT-627 | ESD | 2 mil white polyester PET | ESD | 2 mil hi-temp acrylic | PCK | Low surface resistance(105-109 Ohm) static dissipative. Masking electronic components and motors. -40 to 400°F (-40 to 204°C) |
| XT-628 | Flame Retardant | 2 mil polyester PET | - |
1 mil FR acrylic | PCK | Halogen-free flame retardant meets UL94VTM1 Prevention of flame propagation -40 to 302°F (-40 to 150°C) |
| XT-629 | Hi temp EMI/RF | 2 mil aluminum | - |
1 mil hi-temp acrylic | PCK | High temperature insulation, high conformability, corrosion resistance. Electromagnetic and RF absorption and isolation, heat dissipation, vapor barrier, durable mask application. -40 to 302°F (-40 to 150°C) |
| XT-630 | Hi-temp EMI/RF | 2 mil aluminum | - |
1 mil hi-temp white silicone | PET | Ultra high temperature insulation, high conformability, corrosion resistance. Electromagnetic and RF absorption and isolation, heat dissipation, vapor barrier, durable mask applications. -100 to 1000°F (-73 to 537°C) |
| XT-631 | Flame Retardent | 2 mil aluminum | - |
1 mil hi-temp Flame Retardant acrylic | PCK | Flame retardant meets UL94 VTM1. Electromagnetic and RF absorption and isolation, heat dissipation, vapor barrier, durable mask applications. -40 to 302°F (-40 to 150°C) |
| XT-632 | ESD | 1 mil Kaption polyimide | ESD | 1 mil hi-temp white silicone | PET | Static dissipative (105-109 Ohm) PCB masks during wave solder, low profile electrical and thermal insulation for higher and peak temperatures. -100 to 1000°F (-73 to 537°C) |
| Double Coated ESD Tapes | ||||||
| Name | Feature | Film/face | Surface | Adhesive | Liner | Description/Application |
| XT-652 | Double Coated ESD | 1 mil amber polyimide | Static dissipative | 1 mil hi-temp acrylic | PCK | Anti- static bonding system with thin, conformal bond line. Temporary or permanent component bonding, -40 to 572°F (-40 to 300°C). |
| XT-653 | Double Coated ESD | 1 mil amber polyimide | Static dissipative | 1 mil hi-temp white silicone | PET | Anti- static bonding system with thin, conformal bond line. Temporary or permanent component mounting, -100 to 1000°F (-73 to 537°C). |
| Double Coated Flame Retardant Tapes | ||||||
| Name | Feature | Film/face | Surface | Adhesive | Liner | Description/Application |
| XT-657 | Double Coated Flame Retardant | 2 mil amber polyimide | - |
1 mil FR acrylic | PCK | High temperature bonding system that prevents the propagation of flames. UL 94 VTM0, FAR 25.853 and BSS 7238/7239 compliant. Thin, conformal bond line. -40 to 302°F (-40 to 150°C). |
| Double Coated High Temperature Tapes | ||||||
| Name | Feature | Film/face | Surface | Adhesive | Liner | Description/Application |
| XT-636 | Double Coated Hi Temp | 1 mil amber polyimide | - |
1 mil hi-temp acrylic | PCK | Bonding systems for high temperature applications including wave solder. Thin, conformal bond line. Added electrical insulation between flex circuits and thermal insulation for electrical motors. -40 to 932°F (-40 to 500°C). |
| XT-654 | Double Coated Hi Temp | 2 mil amber polyimide | 1 mil hi-temp acrylic | PCK | Bonding systems for high temperature applications including wave solder. Thin, conformal bond line. Added electrical insulation between flex circuits and thermal insulation for electrical motors. -40 to 932°F (-40 to 500°C). | |
LEGEND:
- PCK: Polycoated Kraft
- PET: Fluorinated polyester
- MOQ: 9” x 1604’ (for
polyimide and polyester)
and 9” x 1000’ (for aluminum and double-coated tapes)


