Rosti
Liquid Silicone Rubber (LSR)
Rosti delivers high-precision Liquid Silicone Rubber molding 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 mold cavity to manufacture a part. LSR is a very versatile elastomer and is used across a wide range 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 molding capabilities.

Tony Austin
European Technical Director

The wide range of LSR
Since it was invented in the mid-20th century, the demand for liquid silicone rubber (LSR) has grown significantly. That’s no surprise when you consider its physical qualities and the range of applications it serves.
Liquid silicone rubber (LSR) has numerous advantages. Most notably, it is:
- Durable
- Flexible
- Stable
- Versatile
LSR is highly pure, making it suitable for a wide range of applications that require strength, superior resistance, and unmatched quality. What really sets LSR apart is its unique properties – liquid silicone rubber can be pumped and molded, mostly through the plastic injection molding process.

Experience with liquid silicone rubber
Rosti’s customers value the reliability and quality we consistently deliver, so it’s no surprise that our impact in the liquid silicone rubber market is growing as well.
We have successfully produced some of the most challenging LSR products, including the production of very small, extra-soft parts. With parts as small as 1g and as soft as 10A (on the Shore A hardness scale), we’ve achieved success across the board.
Whether you are looking for intricate, complex products or something much simpler, liquid silicone rubber could be the right material. We’re confident that Rosti is the ideal production partner.
A reliable partner in LSR
At Rosti, we have been at the forefront of liquid silicone rubber (LSR) injection molding 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.
