Rubber Injection Moulding
Cranfield Group’s specialist rubber injection moulding service embodies our ‘leave it with us’ philosophy. We understand that rubber components often perform critical functions – sealing, vibration damping, or providing flexibility where rigid materials can’t. When you need technically challenging rubber solutions, we find a way.
Our dedicated thermoset machinery and technical expertise enable us to produce high-quality rubber components in natural, synthetic and silicone materials. From tiny medical seals requiring micron-level precision to complex industrial assemblies, we take ownership of your rubber moulding challenges. We flex our approach to match your specific requirements, whether that’s achieving impossible tolerances, solving material compatibility issues, or integrating rubber components into complete assemblies.
Why Choose Cranfield Group
Specialist Expertise in Rubber Component Manufacturing
Our rubber moulding capabilities deliver complete solutions for technically demanding applications:
- Problem-Solving Approach – Rubber components often present unique challenges. We take ownership and find creative solutions others might miss.
- Complete Outsourced Solution – From material selection through to assembled products, leave your entire rubber manufacturing process with us.
- Technical Excellence – Specialising in small, high-tolerance components where precision is critical to performance.
- Flexible Service – We adapt to your needs – whether you require a handful of prototypes or continuous production runs.
- Material Knowledge – Deep expertise in rubber compounds enables us to recommend and process the ideal material for your application.
- Continuous Improvement – Always striving to enhance quality, reduce costs and strengthen our partnership with you.
What Is Rubber Injection Moulding?
Rubber injection moulding transforms raw rubber compounds into precisely formed components through a controlled heating and curing process. Unlike thermoplastic injection moulding, rubber materials undergo chemical cross-linking during moulding, creating components with exceptional elasticity, chemical resistance and temperature stability.
This process excels at producing components with complex geometries, tight tolerances and consistent material properties. The automated nature of injection moulding ensures repeatability across large production runs whilst maintaining the precise dimensions critical for sealing and flexible applications.
Typical rubber injection moulded components include:
- O-rings and custom seals
- Gaskets and diaphragms
- Vibration dampers and mounts
- Medical device components
- Electrical insulators
- Automotive sealing systems
Industries we serve
Our rubber injection moulding expertise extends across diverse industries, each requiring specific material properties and performance characteristics. We adapt our processes and material selection to meet your exact requirements:
Automotive
Critical sealing components, vibration dampers and under-bonnet applications using high-temperature resistant compounds.
Dosing & Dispensing
Chemical-resistant seals and diaphragms for pumps, valves and fluid handling systems.
Electronics
Insulating components, gaskets and vibration mounts for sensitive electronic equipment.
Health & Safety
Medical-grade silicone components and seals meeting strict biocompatibility requirements.
Metal Replacement
Rubber alternatives providing flexibility, vibration isolation and sealing capabilities.
Telecoms
Weather-resistant seals and gaskets for outdoor equipment enclosures.
Trade Moulding
Contract rubber moulding services with complete project management and supply chain support.
Ready to discuss your rubber injection moulding needs? Our technical team will listen to your challenges and develop the right solution. Visit us to see our capabilities in action and discuss how we can solve your rubber component challenges.
Quality Control
Rubber components often perform critical functions – a failed seal can stop an entire system. That’s why quality isn’t just about following procedures; it’s about understanding the importance of every component we produce.
Our ISO 9001:2015 certified processes ensure consistent quality through:
Our quality commitment:
- Material batch traceability
- Dimensional verification
- Hardness and physical property testing
- First article inspection protocols
- Statistical process control
- Continuous improvement initiatives
We take pride in delivering rubber components that perform reliably in challenging environments. Every batch represents our commitment to your success.
Additional Services
Comprehensive Manufacturing Support
Beyond rubber injection moulding, we provide integrated services that deliver complete solutions:
Expert engineering support to optimise components for efficient manufacture and superior performance.
Rapid prototype production and testing to validate designs before committing to production tooling.
High-precision manufacturing of thermoplastic components from prototype to high-volume production.
Complete mould tool solutions from design through manufacture, maintenance and lifetime support.
Value-added processes including printing, welding, and kitting. Turn basic mouldings into complete, market-ready products.
Complete assembly services transforming components into finished products. From simple two-part assemblies to complex multi-component builds.
Custom packaging design and flexible logistics solutions. From bulk packaging to JIT delivery supporting your production schedules.
Not sure which services you need? Our technical team can guide you through the options and develop the right solution for your project.
Frequently Asked Questions
Your Rubber Injection Moulding Questions Answered
What rubber materials can you process?
We work with natural rubber, EPDM, nitrile, silicone, Viton and other specialist compounds. Our team can advise on material selection based on your application requirements.
Can you match specific rubber compounds or hardnesses?
Yes, we work with material suppliers to match existing specifications or develop custom compounds for your requirements.
Do you offer different colours?
Most rubber compounds can be supplied in various colours, though this may affect minimum order quantities.
Can you work with existing rubber moulds?
Yes, we regularly accept tool transfers and will assess your moulds to ensure compatibility with our equipment.
Whether you need precision seals, complex rubber assemblies or high-volume component supply, Cranfield Group has the expertise and capability to deliver. Contact our technical team today to discuss your rubber injection moulding requirements.