Understanding the Difference Between Ester-Based and Ether-Based PUR

At first glance, all PUR cables may look the same.

However, their long-term performance depends heavily on the type of PUR compound used.

Ester-based PUR offers good mechanical strength and chemical resistance,
but under continuous movement and long service life, it may gradually lose flexibility and degrade.

Ether-based PUR, on the other hand, is engineered to remain elastic under constant motion.
It resists hydrolysis and fatigue, making it a more reliable choice for dynamic and demanding applications.

The difference is not visible on day one —
it becomes clear over time, in real operating conditions.