Rosti
Liquid Silicone Rubber (LSR)
Rosti delivers high‑precision Liquid Silicone Rubber moulding for complex, high‑performance components that demand reliability, hygiene and exceptional material resilience.
A Liquid Silicone Rubber material is a two-part platinum-cured elastomer that can be injected into a mould cavity to manufacture a part. LSR is very versatile elastomer and is seen across a whole spectrum of parts from consumer products to medical devices and everything in between.
Our LSR expertise covers fully automated, flash‑free production of durable, biocompatible parts with excellent heat, chemical and UV resistance. From medical devices and baby care products to automotive sealing systems and consumer goods, we provide consistent, scalable LSR manufacturing supported by in‑house tooling, cleanroom production and advanced multi‑material moulding capabilities.

Tony Austin
European Technical Director

The wide-range of LSR
Since its invention in the mid-20th century, the demand for liquid silicone rubber (LSR) has grown significantly. That’s not a surprise when you consider its physical qualities and the range of applications it can serve.
Liquid silicone rubber (LSR) has numerous advantages, most notably, it is:
- Durable
- Flexible
- Stable
- Versatile
LSR is of high purity, which makes it suitable for a wide range of applications where strength is a prerequisite, along with a need for superior resistance and unsurpassed quality. And what makes LSR stand out from the pack is its unique qualities – liquid silicone rubber can be pumped and moulded, mostly through the plastic injection moulding process.

Experience with liquid silicone rubber
Rosti’s customers appreciate the reliability and quality that we always deliver, so it’s no surprise that our impact on the liquid silicone rubber market is growing too.
We have experience successfully producing the most challenging LSR products; including the production of very small, extra-soft parts; ranging in size from as small as 1g, and as soft as 10A (on the Shore A hardness scale), we’ve seen success across the board.
Whether you are looking for intricate, complex products or something much simpler, liquid silicone rubber could be the right choice of material. We have no doubt that Rosti is the right choice of production partner.
A reliable partner in LSR
At Rosti, we have been at the forefront of liquid silicone rubber (LSR) injection moulding for years. Our technical expertise, global network of suppliers and toolmakers, and commitment to quality ensure that we deliver top-quality LSR products every time.
