Rubber Injection Moulding
We specialise in the manufacture of rubber components using injection moulding technology. We process EPDM, SBR, NBR, CR, FKM, NR and VMQ rubber compounds to produce high-volume rubber seals, technical components and engineered parts for a wide range of industries.
GUMOTIV / Technology /
Manufacturing Rubber Components Using Injection Moulding Technology
Our Rubber and Silicone Injection Moulding Department is equipped with state-of-the-art injection moulding machines from leading manufacturers, including Desma, Maplan and Engel, with clamping forces ranging from 100 to 1,350 tonnes.
Our rubber injection moulding capabilities allow us to manufacture moulded components measuring up to 2,000 × 1,500 mm and weighing up to 20 kg. This enables the efficient production of both large technical components and smaller parts using multi-cavity moulds.
Manufacturing automation is one of the key priorities of our Technical Department. Many of our proprietary automation and robotics solutions represent valuable company know-how and play a significant role in improving production efficiency, reducing manufacturing costs and ensuring consistently high product quality.
Modern Injection Moulding Manufacturing
Manufacturing Equipment
70 injection moulding machines with clamping forces of up to 1,350 tonnes.
High-Volume Manufacturing
We manufacture an average of 1,000,000 components per day.
Continuous Production
Production operates continuously, 24 hours a day, 7 days a week.
Skilled Team
We currently employ approximately 200 people.
Experience
We have more than 60 years of experience in the rubber industry.
Global Reach
Our products are exported to more than 30 countries worldwide.
Examples of Injection-Moulded Components
Injection Moulding of EPDM, SBR, NBR and Other Rubber Compounds
Our material portfolio includes a comprehensive range of rubber compounds based on SBR, EPDM, NR, CR, NBR, FKM and VMQ elastomers, available in a wide variety of hardness grades and performance characteristics. We work with a carefully selected network of suppliers offering proven compound formulations developed for specific applications, where material requirements are defined according to EN, DIN, ISO and ASTM standards or tailored to the individual needs of each customer and product.
Chemical resistance, temperature resistance, ageing performance, electrical properties, drinking water approvals, hardness, strength and density are just some of the parameters we evaluate when selecting the most suitable material for your application.
Strict incoming material inspection, supported by advanced laboratory testing equipment, ensures consistent product quality, repeatable material properties and stable manufacturing processes.
The Most Common Rubber Compounds Used in the Manufacture of Rubber Components
With more than 60 years of experience in the rubber industry, we have developed extensive expertise in manufacturing high-quality rubber seals and technical rubber components. Our knowledge enables us to select the optimum rubber compound and define the most effective processing parameters to achieve the required product performance.
The table below presents the properties of the most commonly used rubber compounds and their typical applications:
| Material | Operating Temperature Range | Ozone and UV Resistance | Oil and Fuel Resistance | Chemical Resistance | Key Characteristics |
|---|---|---|---|---|---|
| EPDM | -40°C to +120°C (up to approx. +150°C short-term) |
Excellent | Poor | Excellent resistance to water, steam and many inorganic solutions | Outstanding weathering, ageing and UV resistance |
| NBR | -30°C to +100°C (special compounds up to approx. +120°C) |
Limited | Excellent | Excellent resistance to mineral oils, lubricants and fuels | The most widely used rubber for hydraulic and fuel system applications |
| SBR | -40°C to +90°C | Low | Poor | Limited | Excellent abrasion resistance and cost-effective performance |
| CR (Neoprene) | -35°C to +110°C | High | Good | Good resistance to weathering and many chemicals | Combines environmental resistance with good mechanical properties |
| NR | -50°C to +80°C | Low | Poor | Limited | Exceptional elasticity, resilience and fatigue resistance |
| FKM | -20°C to +200°C (special compounds up to +250°C) |
Excellent | Excellent | Outstanding resistance to aggressive chemicals | Designed for the most demanding industrial applications |
| VMQ | -60°C to +230°C | Excellent | Moderate | Good | Wide operating temperature range and excellent ageing resistance |
Suitability of Rubber Compounds for Different Service Media
The operating environment and intended application of the finished product are key factors when selecting the most appropriate rubber compound. The table below illustrates the suitability of different rubber compounds for various service media:
| Material | Water & Wastewater | Mineral Oils | Fuels | Steam | UV Radiation | Acids & Alkalis |
|---|---|---|---|---|---|---|
| EPDM | ★★★★★ | ★☆☆☆☆ | ★☆☆☆☆ | ★★★★★ | ★★★★★ | ★★★★☆ |
| NBR | ★★★☆☆ | ★★★★★ | ★★★★★ | ★☆☆☆☆ | ★★☆☆☆ | ★★☆☆☆ |
| SBR | ★★★☆☆ | ★☆☆☆☆ | ★☆☆☆☆ | ★★☆☆☆ | ★★☆☆☆ | ★★☆☆☆ |
| CR | ★★★☆☆ | ★★★☆☆ | ★★★☆☆ | ★★☆☆☆ | ★★★★☆ | ★★★☆☆ |
| NR | ★★★☆☆ | ★☆☆☆☆ | ★☆☆☆☆ | ★★☆☆☆ | ★☆☆☆☆ | ★★☆☆☆ |
| FKM | ★★★☆☆ | ★★★★★ | ★★★★★ | ★★★★☆ | ★★★★★ | ★★★★★ |
| VMQ | ★★★★☆ | ★★★☆☆ | ★★☆☆☆ | ★★★★☆ | ★★★★★ | ★★★☆☆ |