Customer Success Story – Enhancing Sealing with PTFE/FEP Heat-Shrink Tubing
Customer Background
We recently collaborated with an electronic seal company serving a major automobile manufacturer. As experts in PTFE/FEP heat shrink tubing, they approached us to improve the sealing performance of parts exposed to high-temperature corrosive liquids.
The Challenge
The customer faced issues with anti-corrosion for electronic components in harsh liquid environments. Their original solution caused poor sealing and pipe degradation over time, leading to quality problems and production delays. Quick, reliable solutions were required to ensure long-term part protection and uninterrupted production schedules.
Our solution
After inspecting the existing sealed tubes, we identified that the nozzles were not fully sealed, allowing slow liquid infiltration. To resolve this, we recommended our double-layer heat-shrinkable tubing, featuring:
- Outer layer: PTFE heat-shrinkable tube for durable external protection.
- Inner layer: High-quality FEP that fully melts at 600°C in 45 seconds to completely seal the part.
- Available in multiple colors, including black PTFE for confidential part protection.
This solution ensures superior sealing performance and protects sensitive parts effectively.
Results
Preliminary tests demonstrated significant improvements:
- Extended service life of components.
- Reduced unplanned downtime.
- Enhanced protection for various shapes and sizes using double-layer heat-shrink tubing with different shrink ratios.
By leveraging our expertise as a trusted PTFE tube manufacturer, we help clients achieve reliable, long-lasting solutions for challenging industrial applications.

2. At noon on March 16th, I received an e-mail, because the customer’s use conditions changed and the tube broke. After I understood the reason, I found that the wall thickness of the pipe that the customer wanted was not enough to cope with his current use environment. The customer placed an order in a hurry, and was not familiar with the product, and the expression of the use environment was not accurate.
As a professional manufacturer, we naturally have to help customers solve their problems. Then I proposed to customers a plan to increase the wall thickness, and provided customers with a new batch of products with thicker pipe walls for free. We will let customers try it out first. If the use requirements are met, then pay at the previous price. Although the exchange rate and raw materials have risen, we hope that customers can purchase more at ease without worrying about professional problems, so we insist on not letting customers bear the extra cost. loss.
Customers buy products for use, not for refunds. It is our responsibility to truly ascertain customer needs and reduce customer costs.

3. High procurement efficiency
“Time is money”, especially in the modern business age, people’s life is getting faster and faster, and customers’ requirements for suppliers’ response speed are getting higher and higher.
If the supplier’s response speed is too slow, it will inevitably fail to meet the delivery date and affect the customer’s experience.
In the 10,000-meter PTFE/FEP double-layer heat-shrinkable tube project, our company learned that the customer’s order demand was urgent at noon on Thursday, so before 4 pm that day, the production line with a lower emergency level was replaced with the product material required by the customer. And I contacted the colleague in charge of the transportation department to book the air freight warehouse at the first time, and four days later, the goods were loaded on the trucks prepared in advance and sent to the airport.
Corresponding production efficiency is an indicator of life for my factory. As a world-renowned plastics manufacturer, we will ensure production and delivery effectiveness at all costs.
