Electrical Insulation PTFE Film

Electrical Insulation PTFE Film is a premium insulation material manufactured from 100% virgin polytetrafluoroethylene (PTFE), designed for demanding electrical and cable insulation applications. It offers outstanding dielectric performance, extreme temperature resistance, and long-term stability, making it a preferred solution for cable manufacturers and industrial electrical system suppliers worldwide.

Produced under a strict ISO 9001 quality management system,it ensures consistent quality, reliable performance, and batch-to-batch stability, which are essential for mass production and long-term supply programs.

Why Choose this product

✔ Excellent Electrical Insulation Properties

High dielectric strength

Low dielectric constant and dissipation factor

Stable electrical performance across wide voltage and frequency ranges

Suitable for high-voltage and precision electrical applications

✔ Wide Temperature 

Continuous operating temperature: –190°C to +260°C

Maintains insulation performance under extreme heat or cold

Ideal for cables exposed to thermal cycling or high operating temperatures

✔ Chemical & Environmental Resistance

Resistant to moisture, oils, fuels, solvents, acids, and alkalis

Non-aging and non-corrosive

Suitable for harsh industrial and outdoor environments

✔ Thin, Lightweight & Flexible

Enables compact electrical and cable designs

Easy to wrap, laminate, or apply as a separation layer

Maintains flexibility without cracking or embrittlement

Slitting and packaging

Slitting width of 4mm to 200mm, the winding roll maximum OD 300mm, the plastic cores ID 76mm with flat pad and step pack/solid pad.

Storing Recommendations for Unsintered Tapes

For maximum shelf life, it is recommended that PTFE films are stored in a clean, temperature-controlled environment at or below 21C with relative humidity below 50%.

About us

Founded in 2009, Foreverseal is one of the world's largest manufacturers of high quality PTFE tape. More than 10 years development, foreverseal has successfully upgraded from the PTFE tape to the manufacturing of high-end ePTFE film industry.

In 2019, we have imported of the world-class precision calender and stretching equipment and established test laboratory; The expert who have engaged in the Fluorine industry more than 30 years led the whole technical team, providing us a strong technical for PTFE film and guide us to the new area of PTFE products in the future!

PTFE is a special material, lets work together to make it in a wider range of uses to fulfill the customers' need and even the requires of the whole social development!

OUR STRENGTHS

Constant temperature and 100,000 class dustless workshop

Advanced high - precision machines

Lead by more than 30 years experts in Fluorine industry

A fully equipped test laboratory

Certifications

 

ISO9001  

UL

WRAS

DVGW

ROHS

ACS

 

Application 

FAQ

 

 

01. What is the typical lead time?

Standard specifications: 2–3 weeks
Customized orders: 3–5 weeks, depending on requirements and order volume.

02.   How do you control thickness and tolerance?

Thickness is controlled during production, and tolerance is strictly managed to meet industrial requirements, especially for electrical and insulation applications.

03.  Can you provide samples before bulk orders?

Yes. Samples are available for evaluation.
For standard items, samples can be shipped quickly to support customer testing and approval.