Ref. 7879EJ
Matt silver PET film 81 µm, thicker than standard PET, with a matt finish that eliminates glare in automatic readers. UL certification included. When the automotive component may come into contact with brake fluid, the 350E adhesive holds without failing. A straightforward material for certified identification in automotive and electronics.
TT3 MS PET 75 · 350E · 90DWG — Matt silver PET film
UL · Brake fluid · TTR · Automotive and electronics
PET film 81 µm · Matt silver finish
Metallised PET film with matt finish. 81 µm — thicker than standard 50 µm PET. The matt finish reduces glare in automatic readers and gives a more neutral look than gloss metallised film.
Brake fluid resistance / permanent 350E adhesive
The 350E 46 µm acrylic adhesive holds its bond during prolonged contact with brake fluid. The label does not lift or lose legibility on brake system components.
UL certification
UL-certified material. Check that the UL file number matches your project requirement before production. Consult our technical team.
TTR resin printing / Lit-Off ribbon
Use a resin or wax-resin ribbon compatible with metallised PET for the best image quality and durability. If you need a compatible ribbon, contact us — we supply that too.
For complete technical data (adhesion, grammage, tensile strength, 90DWG release liner), see the PDF data sheet or contact our technical team.
Why this material
Why the matt silver finish and brake fluid resistance make this PET the reference for automotive component identification
The problem: labels on brake system parts with a UL requirement
Brake system components — cylinders, callipers, reservoirs — need permanent identification that withstands contact with brake fluid. Most adhesives cannot withstand DOT 3/4 and the label ends up lifting or unreadable. If the project also calls for UL certification, the combined requirements narrow the available options considerably.
Ref. 7879EJ meets both requirements in a single construction.
Matt silver vs. gloss platinum: when the finish matters
The matt finish is not just cosmetic: on automated production lines with barcode readers, the matt background reduces the specular glare that can cause failed reads. For components that will sit in high-temperature areas or low direct light, matt gives more consistent results than gloss.
The 81 µm thickness — compared with 50–53 µm for standard PET — adds stiffness and tear resistance during component assembly on the line.
Key advantage
PET 81 µm · Matt silver · Brake fluid
50–53 µm PET films are sufficient for standard industrial labelling. The 7879EJ delivers 81 µm, a 50% increase in thickness, with a matt finish that eliminates glare in automatic readers, brake fluid resistance from the 350E adhesive, and UL certification. The combination built for automotive use when the component will be in contact with aggressive hydraulic circuit fluids.
Check the UL file number with our technical team before production. For full adhesion data, see the PDF data sheet.
Technical properties
Construction and performance data
| Parameter | Value |
|---|---|
| Face film | Matt silver PET · 81 µm |
| Finish | Matt silver (metallised) |
| Adhesive | 350E · 46 µm · Permanent acrylic |
| Temperature resistance (149 °C, 24 h) | Shrinkage ≤ 0.9% · No visual change |
| Release liner | 90DWG · Siliconised |
| Certification | UL |
| Chemical resistance | Brake fluid (DOT 3/4) |
| Printing | Thermal transfer (TTR) · Resin/wax-resin |
| Recommended application | Automotive · Electronics · Hydraulic components |
Face PET film
81 µm
Matt silver PET film, 81 µm, 50% more thickness than standard PET. Greater stiffness and tear resistance during assembly on the production line.
350E adhesive
46 µm
Permanent acrylic adhesive, 46 µm. High bond strength on metal and plastic. Resistant to contact with DOT 3/4 brake fluid without loss of adhesion.
Certification
UL
UL certification included. For automotive and electronics with a certified identification requirement. Confirm the specific file number with our team.
Resistance profile
Excellent
Brake fluid resistance
The 350E adhesive withstands contact with DOT 3/4 brake fluid without the label lifting or losing legibility. Designed for hydraulic circuit components in automotive applications.
Excellent
UL certification
UL certificate included. Covers identification requirements in automotive and electronics. Check the file number before production.
Excellent
Adhesion on metal and plastic
350E adhesive with high permanent adhesion on metal substrates and automotive plastics. Compatible with high-speed automatic applicators.
Limited
High temperature
This is not a high-temperature material. For applications in areas of sustained high temperatures, see the high-temperature range in our catalogue.
Multilayer composition
How it is built
Do you need to validate this material for your application?
Tell us the type of component, the surface, the fluid exposure and the UL requirement. We will confirm whether Ref. 7879EJ is the right material in less than 24 hours.
For the specific UL file number, request it from our technical team before production.
Technical documentation
For more technical details, we have the complete version of the Technical Data Sheet in PDF format.
Download PDF specificationBefore you order
What you should know
The material carries UL certification. Before closing the order, check that the UL file number matches exactly what your project or customer requires. Request it from our technical team if you need it.
For TTR printing on metallised PET, use a compatible resin or wax-resin ribbon. Wax ribbon does not give consistent results on this substrate. If you need a compatible ribbon, contact us — we supply that too.
As always, we recommend validating the material under real process conditions — especially in contact with the specific fluid — before starting production.
Operational summary
Face film
Matt silver PET · 81 µm
Adhesive
350E · 46 µm
Release liner
90DWG
Certification
UL
Supply details
Free technical sample
We send it to you before production to validate in your real process.
Response in less than 24 hours
Technical consultation handled by specialists since 1994.
Custom format
Roll, sheet or die-cut according to reference and process.
Delivery throughout Europe
We supply to the entire European Union.
Contact
Do you need to validate this material?
Tell us the component, the surface, the fluid exposure and the certification requirement. We will confirm whether Ref. 7879EJ is the right material in less than 24 hours.
- Free technical advice with no obligation.
- Response in less than 24 hours.
- Samples available for testing in real process conditions.