What is TPE material?

TPE material (Thermoplastic Elastomer) has established itself as a versatile solution in highly demanding sectors such as automotive, medical, and pharmaceutical industries.

Understanding what TPE is and in which contexts it adds value is key to optimizing design, functionality and production processes. 

What is TPE?

TPE (Thermoplastic Elastomer) is a family of polymer materials that combine the elastic properties of rubber with the processability of thermoplastics elastomers. This means it can deform and return to its original shape, while also being processed using standard industrial techniques such as injection molding.

When discussing what TPE is, it is important to note that it is not a single material, but a category that includes different types (TPE-S, TPE-V, TPU material among others), each tailored to specific requirements.

​Which TPE properties explain its use in technical parts?

To understand why TPE material is widely used in industrial environments, it is necessary to analyze the properties that differentiate it from other polymers.

Its combination of elasticity, adaptability, and functional performance makes it an especially efficient option for designing technical components.

Elasticity, sealing performance and functional feel

TPE offers excellent elasticity, making it ideal for applications requiring tight sealing or impact absorption.

Additionally, its soft-touch feel improves ergonomics in frequently used components. 

Processability through injection molding, extrusion and overmolding

One of the major advantages of TPE is its compatibility with multiple manufacturing processes. It can be injection molded (including bi-material or bi-component injection molding), extruded or used in overmolding on other materials such as polypropylene, enabling multi-material designs without complex processes. 

Chemical, thermal and aging resistance

Depending on its formulation, TPE provides good resistance to chemicals, temperature variations, and environmental aging.

These properties are essential in sectors where durability is critical. 

Is TPE material toxic?

One of the most frequently asked questions is: is TPE material toxic? The answer is not universal. 

Why the answer depends on the grade and the application

TPE can be completely safe or not, depending on its composition and intended use.
There are grades specifically developed for medical or food applications that comply with strict regulations (such as FDA regulations for medicine or EU 10/2011).

Therefore, when evaluating whether TPE is toxic, it is essential to verify:

• The material grade
• Available certifications
• The usage environment (contact with skin, fluids, pharmaceuticals, etc.)

Where is TPE used in medical, pharmaceutical and medicine delivery components?

TPE material is widely used in healthcare applications due to its sterilization capability, flexibility, and chemical compatibility.

Applications in tubing, connectors, seals, valves, membranes, and closures

In these sectors, TPE is used in:

• Flexible tubing for fluid transfer
• Connectors and adapters
• Sealing gaskets
• Valves and membranes
• Hermetic closure systems

What this material must meet when in contact with medicines or sensitive fluids

When TPE comes into contact with pharmaceuticals, it must meet strict requirements:

• Biocompatibility
• Low extractables and leachables
• Resistance to sterilization (gamma, EtO, steam)
• Material traceability

Why is TPE used in automotive applications?

The use of TPE in automotive responds to the need for lightweight, resistant, and versatile materials. 

Common parts where TPE adds value

Examples include:

• Seals and gaskets
• Interior coatings
• Anti-vibration components
• Protective covers

Requirements: Temperature, fluids, fatigue and aging

TPE must withstand:

• High and low temperatures
• Contact with oils, fuels, and other fluids
• Mechanical fatigue from continuous use
• Long-term exposure to UV radiation and environmental conditions

 When does TPE offer a clear advantage in manufacturing?

TPE is particularly advantageous when there is a need for:

• Functional integration (sealing + structure)
• Cost reduction through efficient processes
• Replacement of thermoset rubbers
• Improved user experience (touch, ergonomics)

What should a company evaluate before manufacturing a TPE part?

Before selecting this material, several technical factors must be analyzed. 

Geometry, Hardness, Tolerances, Adhesion, and Process

Key aspects include:

• Geometric complexity of the part
• Required hardness (Shore A or Shore D)
• Dimensional tolerances
• Compatibility with other materials in overmolding
• Most suitable manufacturing process

Testing, Validation, and Industrial Scale-Up

It is essential to validate the design through:

• Mechanical and chemical testing
• Aging tests
• Functional validations
• Industrial production scaling without loss of quality

How to choose a direct manufacturing partner for complex TPE parts?

Selecting the right partner is critical to ensuring project success. It is recommended to choose suppliers that offer:

• Experience in TPE processing
• Engineering and co-development capabilities
• Regulatory knowledge in controlled sectors
• Quality control and traceability
• Industrial scalability

In this context, working with a specialized partner like OSF Plastic, an expert in plastic and silicone injection molding, enables the transformation of TPE’s advantages into reliable, optimized technical solutions tailored to each sector’s requirements.

For any additional information, feel free to contact us.