Plastic Injection Moulding Belfast
Plastic Injection Moulding Belfast | UK Manufacturer Stephens Plastic Mouldings
Plastic Injection Moulding Services in Belfast for Precision & Performance
Stephens Plastic Mouldings proudly supports Belfast’s growing industrial base with expert plastic injection moulding services, from single-part prototypes to complex, multi-cavity production. As one of the UK’s leading custom plastic component manufacturers, we deliver reliable, UK-made solutions backed by ISO 9001-certified processes, flexible volume options, and engineering expertise.
Whether you’re developing a new enclosure for electronics, looking to reshore a supply chain, or need durable, repeatable plastic parts for commercial use – we combine technical support with production scale to keep your projects moving forward.
Serving Belfast’s Core Industries
We work closely with customers across Greater Belfast – including Lisburn, Newtownabbey, and Antrim – offering high-precision components for:
- Advanced Manufacturing & Engineering: Strong, lightweight mouldings for mechanical and assembly applications.
- Medical Technology & Diagnostics: Cleanroom-compatible plastics for equipment housings, trays, and sample components.
- Smart Infrastructure & Controls: Impact-resistant, weather-stable parts for utilities, sensors, and monitoring devices.
- Food Packaging & Processing: Food-safe, non-toxic plastics with the right balance of strength and hygiene compliance.
- Electronics & Industrial Controls: Custom moulded casings, buttons, and brackets for precision builds.

Our Services for Belfast-Based Businesses
We work from your existing 2D/3D files or help you develop new designs. Our engineers provide DFM (Design for Manufacture) feedback to reduce cost, improve mouldability, and speed up tooling.
All mould tools are manufactured at our UK facility. This includes aluminium tooling for fast prototyping and steel tools for long-run production - with full ownership and rapid revisions as needed.
Before mass production, we help you test design concepts with soft tools, low-volume sample runs, or 3D-printed models. Our prototyping approach reduces downstream risks.
We mould ABS, polypropylene, nylon, polycarbonate, acetal and more - from 100 parts for a pilot batch to hundreds of thousands for continuous supply.
We add value with ultrasonic welding, drilling, insert moulding, printing, and sub-assembly - delivering parts that are fully prepared for integration or retail.
We ship directly to Belfast, Craigavon, Lisburn and across Northern Ireland - offering lead time certainty, custom packaging and call-off agreements where required.
Why Belfast Companies Choose Stephens Plastic
1. Consistency You Can Trust
We’re ISO 9001:2015 certified, which means you receive traceable, inspected, and consistent components – no surprises, no shortcuts.
2. UK Manufacturing Control
Tooling, moulding, and quality assurance are all managed internally, giving you faster feedback, tighter tolerances, and no offshore delays.
3. Sector Insight
With experience across medical, energy, agri-tech, electronics and packaging, we understand what your part needs to do – and how best to produce it.
4. No Minimum Order Quantity
We don’t limit your options. Whether you’re an early-stage startup or a global manufacturer, we scale with your project’s needs.
5. Project Management You Can Rely On
Every project is assigned a dedicated manager – someone who understands your goals, communicates clearly, and ensures delivery is met.
FAQs – Plastic Injection Moulding Belfast
Yes. We supply components using certified materials suitable for medical and food contact applications, with documentation available on request.
Absolutely. Our engineers can advise on wall thickness, flow, tolerances, draft angles, and more - helping you reduce cost and improve performance.
Yes. All tooling is manufactured in-house at our UK facility, giving you faster lead times and better control over tool design and maintenance.
We provide secure, tracked shipments across Belfast and Northern Ireland, with optional batch scheduling or call-off stockholding agreements.
Yes. We offer prototype moulding and short-run tooling to help you validate designs before scaling to full production volumes.
Your UK Partner for Injection Moulded Plastic Components
Stephens Plastic Mouldings is proud to serve Belfast’s manufacturers with dependable plastic injection moulding solutions.
With full UK-based control, sector expertise, and the ability to scale to your exact needs, we’re the supplier you can grow with.
Speak with our technical team today OR Email sales@stephensplasticmouldings.co.uk.
We’d Love to Hear From You, Get In Touch With Us!
Please contact us if you would like to receive a quotation and/or to find our more about how we can provide the service you are looking for.