---
title: Our Highred Material (UNR04)
description: Highred is our answer to a wide range of sealing technology applications ...
---

[News ](https://www.ulman.de/en/news)

# [Our Highred Material (UNR04)](https://www.ulman.de/en/news/our-highred-material-unr04/)

 Written by [Admin](https://www.ulman.de/en/news/author/admin) | Jan 4, 2017 4:00:00 AM

Our  **Highred (UNR04)**  material is a extremely high performance Polyurethane with a hardness of  **95 ± 2 Shore A**  in the colour ** wine red.**  It clearly distinguishes itself from other materials by various characteristics. Highred is a cast polyurethane, due to its closed meshed cross-linking it has a particularly  **high stability**  and is suitable for all mechanically turned seals.

Even ** small quantities ** can be manufactured up to a  **diameter of Ø 2,000 mm**  within a few days for your application.

Highred is characterized by its  **excellent temperature resistance**  from  **-50°C to +120°C ** and is applicable in  **air** ,  **water** ,  **water-oil mixtures** , as well as in  **common hydraulic oils** .

Due to the adding of friction reducing additives, Highred has an  **extremely low friction coefficient** , which guarantees an almost stick-slip free run, simultaneously with  **high wear resistance**  and ** long service life** . Furthermore, Highred is characterized by excellent mechanical properties, which guarantee the best extrusion resistance at high pressures and high sliding speed.

Highred is our answer to a wide range of sealing technology applications.

[View full post](https://www.ulman.de/en/news/our-highred-material-unr04/)

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