Plastic Injection Moulding Swansea
End-to-End UK Plastic Manufacturing
Delivering High-Quality Plastic Components to Swansea’s Engineering Economy
Stephens Plastic Mouldings proudly supplies plastic injection moulded parts to Swansea and West Wales, supporting manufacturers, OEMs, and innovators in delivering durable, reliable components to market.
Swansea’s diverse industry base – from marine technology to electronics and sustainable infrastructure – requires manufacturing partners who offer both technical understanding and supply consistency. Stephens Plastic is that partner. With in-house tooling, scalable production, and ISO 9001:2015 certification, we help bring your ideas into production – on time, on budget, and on spec.
What We Offer to Swansea-Based Businesses
We manage the full component lifecycle - from CAD input and tooling, to injection moulding, finishing, and delivery. Our single-source model reduces delays, improves quality, and lowers your risk.
Developing something new? We support low-volume batches with cost-effective tooling so you can test designs before committing to mass production. Ideal for R&D, spinouts, and product launches.
No third-party delays. We design and build all injection mould tools internally, using CNC machining and hardened materials for long life and high precision.
We produce parts from ABS, polypropylene, nylon, polycarbonate, and other thermoplastics, with options for UV stability, chemical resistance, and flame retardancy.
We fulfil repeat production schedules, call-off contracts, and urgent low-volume runs - delivering directly to sites in Swansea, Neath, Llanelli and across the South Wales coast.
Why Stephens Plastic?
1. Proven Track Record
We’ve supported UK manufacturing for over 20 years with accurate, repeatable mouldings for clients in critical sectors.
2. ISO-Certified Processes
Our operations run under ISO 9001:2015 standards, ensuring documentation, inspection, and full traceability across all parts.
3. Transparent, Responsive Project Management
From quoting to delivery, our Swansea clients benefit from dedicated project leads and timely updates – no chasing, no surprises.
4. No Minimum Order Requirement
Whether you’re trialling a new idea or scaling up, we accommodate your requirements without rigid volume demands.
Industries We Support in Swansea
- Marine & Environmental Engineering: Water-resistant, impact-tolerant components for offshore or rugged environments.
- Clean Tech & Renewables: Enclosures and fixtures for monitoring equipment, control systems, and sustainable infrastructure.
- Consumer Products: High-volume, precision plastic mouldings for packaging, homewares, and devices.
- Medical & Healthcare: Non-invasive plastic parts and cases, built for hygienic, repeatable use.
- Manufacturing & Electrical: Connectors, casings, fittings and cable management components.
FAQs – Plastic Injection Moulding Swansea
Yes. We can mould over metal inserts or secondary plastic components depending on your design needs.
Definitely. We offer engineering advice on material selection based on strength, flexibility, exposure, and compliance needs.
Tooling takes 3 - 5 weeks depending on complexity. Once approved, most part orders are completed in 2 - 4 weeks.
We often help clients redesign parts to reduce plastic usage or tool complexity while maintaining function and appearance.
Partner with a Trusted Moulding Manufacturer
Stephens Plastic Mouldings offers the skill, capacity, and reliability to serve ambitious businesses in Swansea and West Wales. Whether it’s a one-off part or a full production contract, we’re here to deliver results you can count on.
Speak with our Technical Team 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.