Company
Plastics Processing with Experience and Technical Expertise
Since 1989, Seifert Kunststoff GmbH has been a leader in the precision CNC machining of thermoplastics. From the very beginning, the company has focused on manufacturing technically sophisticated plastic components for industrial applications.
Today, with a specialized team of 45 employees, we manufacture high-precision components for customers in a wide range of technical industries. Our goal is to reliably and efficiently meet complex requirements while ensuring the materials are used appropriately. We take pride both in the quality of the plastic components we manufacture and in our flexibility regarding order quantities and delivery times.
Development with Stability and Foresight
Founded in 1989, the company has steadily grown into a high-performance manufacturing partner for industry. Its specialization in CNC turning and CNC milling of high-quality thermoplastics remains the technological foundation of the company to this day.
Through consistent investment in modern manufacturing technology and a skilled workforce, our production capabilities have been steadily expanded. Our state-of-the-art machinery includes 5-axis machining centers and turning-milling centers, which enable even complex component geometries to be machined in a single setup.
Long-standing customer relationships and sustainable growth underscore the stability and reliability of our company.
Quality as a Mandatory Standard
Quality is an integral part of all our processes. Our quality management system is certified to DIN EN ISO 9001:2015. The certification applies to the CNC manufacturing of plastic parts and is validated through regular surveillance audits.
In-process inspections, documented measurement reports, and structured final inspections ensure compliance with defined requirements. Additional services such as surface treatment, assembly, and ultrasonic cleaning enable a reliable, end-to-end solution.
A technical partner committed to finding solutions
We don't see ourselves as merely a manufacturer, but as a technical partner. Our customers benefit from close coordination between sales and engineering.
Starting as early as the development phase, we provide support in the following areas:
- Design for manufacturability
- Planning of prototypes, low- and medium batch production
- Optimization of tolerances according to functional requirements
- Advice on dimensional accuracy and dimensional stability of thermoplastic components
- Recommendations for simplifying complex geometries
A dedicated point of contact coordinates internal processes, evaluates technical requirements, and ensures transparent workflows. This structure reduces the need for coordination and provides planning certainty.
Team Expertise
Our manufacturing operations are deliberately geared toward experienced CNC specialists who can efficiently set up, program, and flexibly adapt low- to medium-volume productions. Flat hierarchies enable quick decision-making and direct communication between all departments.
Technical expertise, knowledge of materials, and a strong commitment to quality shape our daily work in production and sales.
Focus on demanding industrial applications
We work with companies for which plastic parts are not mass-produced items, but rather functional, technically significant components. Our customers come from a variety of sectors, including mechanical and plant engineering, measurement and control technology, conveyor and storage technology, medical technology, water treatment, and other specialized industries.
Our strength lies in our ability to precisely meet individual requirements and in building long-term business relationships based on partnership.
Forward-looking and committed to investment
Technology, materials, and market demands are constantly evolving. Through targeted investments in modern machinery, qualified employees, and structured processes, we ensure our competitiveness and the long-term performance of our company.
Our goal remains the same: to deliver technically sophisticated plastic solutions with precision and reliability, working in partnership with our customers.