Liquid Silicone Rubber (LSR) is a two-component system, where long polysiloxane chains are reinforced with specially treated silica. Component A contains a platinum catalyst and Component B contains methylhydrogensiloxane as a cross-linker and an alcohol inhibitor. The primary differentiator between liquid silicone rubber (LSR) and high consistency rubber (HCR) is the “flowable” or “liquid” nature of LSR materials. While HCR can use either a peroxide or a platinum curing process, LSR uses only additive curing with platinum. 

LIQUID SILICON RUBBER PROPERTIES

Depending on the application or its industrial use, LSR offers several advantages. First, it is highly biocompatible, which means it can be used for parts that come into contact with humans, for such applications as organ parts or prostheses. Second, it is very durable and therefore ensures long-term stability and chemical resistance. Third, it is also compatible with a wide spectrum of temperatures, from -60 °C to +250 °C, maintaining its high-performance mechanical properties at all times. Fourth, its electrical properties makes it ideal for insulation and precise conductivity protection. Finally, it is transparent and can be pigmented to harmonize with all color needs, including human skin tones.

LSR are also considered as the material of choice for industries such as Automotive or Medical devices for which small and complex elastomeric parts needs to be produced at high speed and optimum productivity. In such cases, Liquid Injection Moulding of LSRs becomes one of the most efficient process to fabricators.

Liquid Silicone Rubber (LSR) Applications

Consumer Health and Food:

Contact skin applicator

Bakeware

Kitchenware

Baby bottle parts

Breast pump

Medical Devices and Parts:

Skin contact device

Flow control valve

Syringe stopper

Connectors and Caps

Medical tube

Infusion Pump

Pull tab

Gaskets and Seals

Electronic and Industrial Applications:

Double-colour and Multi-material housing

Roller

Smart watch wristband, Children’s smart bracelet

Gaskets and Rubber Seals

Automotive applications:

Plastic over mould part 

Car grommets

O-ring

Return valve

Air conditioning flaps

Bellows Gasket

Liquid Silicone Capacity:

Liquid Silicone Mould

Liquid Silicone Injection Moulding

Over-moulding mould

Two-shot injection moulding

Multiple injection moulding