Silicone Injection Molding
Silicone injection moulding is one of the core manufacturing technologies we use. We produce silicone seals, technical components and other injection-moulded products using HTV and LSR silicone compounds for demanding industrial applications.
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Manufacturing Components Using HTV and LSR Silicone Injection Moulding
Our silicone injection moulding department is equipped with injection moulding machines featuring clamping forces from 100 to 450 tonnes and a maximum shot weight of up to 4000 g, providing extensive processing capabilities for HTV (High-Temperature Vulcanising) silicone compounds. Silicone components are manufactured and post-processed under clean production conditions while maintaining high hygiene standards. Precise material dosing and advanced process automation ensure stable production and consistently high-quality components.
We specialise in the contract manufacture of medium- and high-volume production runs. Our customers include leading manufacturers from the home appliance, electrical, sanitary and building services industries.
The continuous development of HTV and LSR silicone injection moulding technology remains a key element of GUMOTIV’s long-term growth strategy.
Do You Have a Project Requiring Silicone Components?
Or do you need a custom-engineered product tailored to your company’s specifications?
Why Is Silicone the Best Choice for Specific Applications?
Silicone is used in applications where temperature resistance, long-term flexibility and stable material performance are essential. It is the preferred material wherever conventional elastomers cannot provide the required operating characteristics.
Depending on the compound formulation, silicone can be used in applications requiring excellent weather resistance, electrical insulation, high material purity or reliable performance across a wide temperature range. These properties make it an ideal material for a broad range of technical and specialised components.
Advanced Silicone Manufacturing
High-Temperature
Resistant to hot air and dry heat up to 300°C.
Frost Resistance
Maintains performance at temperatures as low as -120°C.
Flame Retardant
Flammability ratings up to UL 94 V-0.
Approvals and Certificates
Colorfull compounds
Dielectric or Conductive
Examples of Injection-Moulded Components
Injection Moulding of VMQ, FVMQ, PVMQ and Other Silicone Compounds
Using injection moulding technology, we process peroxide- and platinum-cured silicone compounds in a wide hardness range of 20 to 90 Shore A, available in virtually any colour.
Depending on the selected formulation, VMQ, FVMQ and PVMQ silicone compounds are widely used for sealing components and electrical insulators operating in highly demanding environments, where they are exposed to extreme temperatures, static and dynamic loads, high pressures and electrical discharge. We have extensive experience in manufacturing silicone components approved for food contact and drinking water applications in accordance with internationally recognised standards, including FDA, BfR, Regulation (EC) No. 1935/2004, KTW, WRAS, KIWA, W270, DVGW, NSF and PZH.
Our engineers will be pleased to help you select the most suitable material and manufacturing process for your application. Feel free to contact us.
Comparison of Silicone Compounds Used in Injection Moulding
Technical silicone compounds used in injection moulding are valued for their outstanding temperature resistance, ageing performance and resistance to weathering. Depending on the application requirements, different types of silicone compounds can be selected, each offering specific mechanical properties, chemical resistance and processing characteristics.
The table below presents the most commonly used silicone compounds in injection moulding technology together with their key performance characteristics, which directly influence the durability and functionality of finished components.
| Material | Operating Temperature Range | UV and Ozone Resistance | Chemical Resistance | Flexibility | Key Characteristics |
|---|---|---|---|---|---|
| LSR | -50°C to +200°C | Excellent | Good | Excellent | Liquid silicone rubber for manufacturing highly precise components |
| HTV | -60°C to +250°C | Excellent | Good | High | Excellent mechanical strength and high-temperature resistance |
| VMQ | -60°C to +230°C | Excellent | Good | Excellent | The most commonly used technical silicone compound |
| FVMQ | -60°C to +200°C | Excellent | Excellent | High | Outstanding resistance to fuels, oils and solvents |
| PVMQ | -80°C to +200°C | Excellent | Good | Exceptional | Maintains flexibility at extremely low temperatures |
Suitability of Silicone Compounds for Different Operating Conditions
Selecting the right type of silicone depends primarily on the operating environment of the finished product. Key considerations include the required temperature range, food-contact compliance, resistance to fuels and oils, as well as the level of precision and long-term stability required for the application. The table below provides a comparison of the suitability of different silicone compounds for specific applications and operating conditions:
| Material | Food Contact | Fuels & Oils | High Temperature | Low Temperature | Weather Resistance | Precision Components |
|---|---|---|---|---|---|---|
| LSR | ★★★★★ | ★★☆☆☆ | ★★★★☆ | ★★★★☆ | ★★★★★ | ★★★★★ |
| HTV | ★★★★☆ | ★★☆☆☆ | ★★★★★ | ★★★★☆ | ★★★★★ | ★★★☆☆ |
| VMQ | ★★★★★ | ★★☆☆☆ | ★★★★★ | ★★★★★ | ★★★★★ | ★★★★☆ |
| FVMQ | ★★★☆☆ | ★★★★★ | ★★★★☆ | ★★★★★ | ★★★★★ | ★★★★☆ |
| PVMQ | ★★★☆☆ | ★★☆☆☆ | ★★★★☆ | ★★★★★ | ★★★★★ | ★★★★☆ |