Water and Process Technology
In Water and Process Technology, engineering plastics and thermoplastics are used wherever there are high requirements for media resistance, dimensional stability, and long-term operational reliability. Thermoplastics and their precise machining play a central role, particularly in systems that are in constant contact with water, chemicals, or cleaning agents.
Seifert manufactures precision components made of thermoplastics for a wide variety of applications in Water and Process Technology. The company provides engineering plastic solutions for industrial plants and process systems, as well as components that must meet high standards of durability and performance.
Typical Requirements in Water and Process Technology
Components in this area are often exposed to constant moisture, chemical substances, or fluctuating temperatures. At the same time, they must function precisely and maintain their dimensional stability over the long term.
Depending on the area of application, the focus is on the following requirements, among others:
- high chemical resistance
- Corrosion resistance
- low water absorption
- Dimensional Stability Under Continuous Load
- Wear resistance
- Temperature Resistance
- good cleanability
- electrical insulation properties
- long service life in continuous operation
Engineering plastics make it possible to tailor components specifically to the various operating conditions found in modern processing plants.

Typical Components and Applications
Typical precision components made of engineering plastics for various applications in Water and Process Technology include, for example:
- Guide and Sliding Elements
- Valve Components
- Spacer and Insulation Parts
- Components Near the Seal
- Pump Components
- Housing and Cover Components
- Bearings and Wear Parts
- Conveyor and Guide Components
- Components for Dosing and Filtration Systems
- Custom Parts Based on Drawings
CNC machining of thermoplastics enables the production of both simple and complex geometries for a wide variety of industrial applications.
Commonly Used Materials
In Water and Process Technology, various engineering plastics and thermoplastics are used, depending on the medium, temperature range, and mechanical stress. These include, among others:
PVC – A material with high chemical resistance and low water absorption.
PE – A chemically resistant material with high resistance to moisture and many media.
PP – High chemical resistance combined with good temperature resistance and low water absorption.
PTFE – A material with very high chemical resistance and particularly good sliding properties.
PVDF – For applications with increased requirements for chemical and temperature resistance.
CNC Machining of Engineering Plastics
Seifert manufactures technical plastic components to specifications using state-of-the-art CNC milling and CNC turning machines.
Possible options include:
- Individual parts
- Small-batch production
- Series Production
- Precision-machined milled and turned parts
- Machining of High-Performance Engineering Plastics
- Manufacturing of Complex Geometries
- Tight tolerances depending on component requirements
The machining process depends on the material, the application, and the technical requirements.
Advantages of Engineering Plastics in Water and Process Technology
Engineering plastics offer advantages over traditional materials such as metal in many areas of Water and Process Technology.
Depending on the application, they enable:
- corrosion-free components
- lightweight
- reduced friction
- good chemical resistance
- quieter operation
- high resistance to media
- electrical insulation
- Cost-effective manufacturing of complex components
This makes it possible to create durable, low-maintenance components for a wide variety of process applications.
Precision Machining of Thermoplastics
The manufacture of technical plastic parts requires machining methods tailored to the material and its intended application. Different thermoplastics react differently to temperature, stress, and mechanical loads.
Modern manufacturing technology and controlled processes result in precision plastic components for industrial applications with high demands on functionality, repeatability, and long-term durability.
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Frequently asked questions about Water and Process Technology
What requirements apply in Water and Process Technology?
In water and process technology, the focus is often on requirements such as chemical resistance, corrosion resistance, wear resistance, and long-term dimensional stability. In addition, temperature ranges, humidity, and consistently reliable performance under process loads play an important role.
Why are engineering plastics used in process plants?
Engineering plastics enable the production of corrosion-resistant and durable components for a wide variety of industrial applications. At the same time, many thermoplastics offer good sliding properties, high resistance to various media, and low weight.
What advantages do plastic components offer over metal?
Engineered plastic components are corrosion-free and often significantly lighter than metal components. Depending on the material, they also offer advantages in terms of friction, noise levels, chemical resistance, and wear behavior.
Can plastic components be exposed to moisture over the long term?
Yes. Many engineering plastics are designed for applications involving continuous contact with water or moisture. The key factors here are the requirements of the specific application and the properties of the material used.
Are engineering plastics suitable for environments exposed to chemicals?
Thermoplastics are frequently used in environments exposed to chemicals. Depending on the medium and operating conditions, materials with high resistance to chemicals and other media are available.
Which components in Water and Process Technology are commonly made of plastic?
Typical plastic components in this field include guide and sliding elements, valve components, pump parts, spacers, bearing parts, wear parts, and components for metering and filtration systems.
Can components be manufactured according to technical drawings?
Yes. Technical plastic components are manufactured based on technical drawings or defined component specifications. We can produce individual parts, small batches, and mass-produced items made from various thermoplastics.
What are the advantages of engineering plastics in sliding applications?
Many engineering plastics have good sliding and wear properties. This makes them suitable for applications involving moving or friction-generating components, such as guides, slide rails, or bearing parts.
What role does chemical resistance play in process engineering?
In process engineering, components are often exposed to cleaning agents, chemicals, or other corrosive substances. The chemical resistance of the material used is therefore a key factor in the component’s performance, service life, and operational safety.
Which thermoplastics are used in industrial processing plants?
A variety of engineering plastics and thermoplastics are used in industrial process plants. The selection depends, among other factors, on mechanical stress, temperature range, contact with process media, and chemical exposure.
