Manufacturing – gaskets for pipeline construction
For more than 80 years, Kroll & Ziller has been manufacturing gaskets for pipeline construction and is your solution partner for all sealing applications.
The manufacturing process for gaskets for pipeline construction
With a large production area, modern machinery and over 690,000 gaskets in stock, Kroll & Ziller produces its rubber-steel flange gaskets in Hilden, North Rhine-Westphalia.
Research and development at the site in Germany, technical support and personal contacts round off the range of services.
In the field of sealing technology and pipeline construction, Kroll & Ziller manufactures industrial gaskets such as rubber-steel gaskets, flat gaskets,profile gaskets, wedge rings and O-rings.
Production of own rubber compounds
Production of the specially developed Kroll and Ziller rubber compound by mixing, rolling, calendering and granulating. What remains at the end is a granulate that can be ideally further processed by our process technology.
![K&Z-Maschine3862-Final-neu-11.11](https://www.kroll-ziller.de/wp-content/uploads/2020/12/KZ-Maschine3862-Final-neu-11.11-1.png)
Production of the inserts
Production of inserts from various materials using CNC laser cutting technology. Larger diameters are welded afterwards. In a further process, the inserts are prepared for the vulcanization process by priming and covering. This is necessary to create a good as well as inseparable bond between the elastomer (rubber) and the metal insert.
![20200422_120454 production stainless steel inserts for rubber steel gaskets](https://www.kroll-ziller.de/wp-content/uploads/2021/03/20200422_120454-scaled.jpg)
Extrusion
The produced pellets are shaped by the extruder, the insert is placed directly into the raw rubber mixture. The gasket blank is ready.
![K&Z-Detail3815-Final-neu](https://www.kroll-ziller.de/wp-content/uploads/2020/12/KZ-Detail3815-Final-neu.png)
Vulcanization
Kroll und Ziller has a huge stock of molds in which all possible standard dimensions of various standards are available. The blank including the insert is placed in such a mold and vulcanized by our vulcanizing presses at a coordinated temperature and pressure. This is how natural rubber becomes rubber.
![K&Z-Presse3780-Final](https://www.kroll-ziller.de/wp-content/uploads/2020/12/KZ-Presse3780-Final.png)
Large Stock & Optimal Delivery Capacity
A large and well-stocked warehouse is the guarantor of fast delivery. The logistics department with its own joinery packs and ships all over the world.
![K&Z-Portrait-Lager4219-Final](https://www.kroll-ziller.de/wp-content/uploads/2020/12/KZ-Portrait-Lager4219-Final.jpg)