Our services
At OneSeal we offer flexible zinc die casting & plastic injection moulding solutions
Over 50 years of Danish manufacturing expertise – delivering reliable, flexible and high-quality components tailored to your requirements.
At OneSeal, we manufacture a wide range of zinc and plastic components for customers across different industries. Our production capabilities allow us to handle components of various shapes, sizes and levels of complexity – from straightforward parts to more specialised solutions.
With production based in Denmark, we keep our manufacturing processes in-house, giving us close control over quality, consistency and delivery. We work closely with our customers to understand their technical requirements and find the right solution for each individual component.
Our experience enables us to support both smaller production runs and high-volume serial production, always with a focus on reliable quality, efficient manufacturing and competitive solutions.
As a family-owned Danish company, we believe in flexibility, personal service and long-term partnerships. Whether you are looking for a new manufacturing partner or considering moving an existing component to a new supplier, we are ready to discuss how we can support your production needs.
Looking for a manufacturing partner? Let’s talk about how we can support your production needs.













Plastic injection moulding
- Small to high-volume production
- Maximum shot weight of 75 g
- Processing of polycarbonate, polyethylene and other thermoplastics
- Flexible production for a variety of component
Zinc die casting
- Zinc die casting in Zamak 5
- Small to high-volume production
- Component weights from 1–400 g
- Automated washing and deburring available
- Component optimisation and tooling for mass production
We also offer automatic Steel Wire Cutting & End Finishing
At OneSeal, we offer automatic cutting and end finishing of steel wire supplied on coils, providing consistent lengths and clean, easy-to-handle wire ends.
Our automated process handles steel wire in diameters from Ø3 mm to Ø6 mm, with cut lengths from 300 mm to 2,500 mm and a length tolerance of ±2.5 mm.
The wire ends are automatically finished to prevent fraying. This creates a clean, compact end that makes the wire easier to insert into tubes, fittings, joints and other components.
Other wire diameters and lengths available upon request
Contact us to discuss your requirements and production volumes.


