Custom Made Precision Moulding – Built to Your Exact Specifications

There's a certain kind of problem that standard, off-the-shelf rubber parts can't solve. The tolerances are too tight, the geometry too specific, or the application too demanding for anything generic to work reliably. That's the point where custom made precision moulding becomes not just useful — but necessary.

At Polystar Technologies, this is work we've been doing since 1997. We don't just manufacture rubber parts — we develop them alongside our customers, starting from compound selection and working through to final production. With over 250 active compounds in our portfolio, we have the formulation depth to match materials to applications that others might turn away.

Compression Moulding – Proven, Reliable, Cost-Effective

Compression moulding remains one of the most widely used processes in rubber manufacturing, and for good reason. A pre-measured amount of rubber compound is placed directly into an open mould cavity, which is then closed under heat and pressure until the material cures and takes the shape of the tool.

It's a process that suits a broad range of part geometries — particularly those with simpler cross-sections or larger dimensions where other methods become impractical or expensive. For medium to high volume runs, compression moulding consistently delivers parts with good dimensional accuracy and strong material integrity.

Where it really earns its reputation is in applications where material properties matter as much as shape — seals, gaskets, vibration dampeners, and other functional rubber components that need to perform consistently over time.

Transfer Moulding – Greater Precision, Greater Control

When part complexity increases, transfer moulding steps in. In this process, the rubber compound is placed in a chamber — known as a pot — and forced through sprues into a closed mould cavity under controlled pressure. The result is tighter dimensional tolerances, better flow into intricate features, and more consistent part-to-part repeatability.

Transfer moulding works particularly well for components with inserts, undercuts, or multi-cavity configurations where consistency across every single part matters. It bridges the gap between the simplicity of compression moulding and the full automation of injection moulding — giving manufacturers a practical, reliable option for mid-complexity precision parts.

Custom Made Precision Moulding