Engineered Molded Parts are being applied not only in heat exchangers, but in many different market segments, especially in the Automotive, Potable Water, Food and Beverage, Life Sciences, Industrial, and Fluid Power industries.

Product Design at Trelleborg Sealing Solutions.

We divide Engineered Molded Parts into certain product categories.

Besides these typical design criteria and related application know-how, we also record suitable manufacturing capabilities and methods and how to achieve an optimized price-performance ratio. All in all, this categorization enables us to focus on the fast and secure development of Engineered Molded Parts with a long life-cycle.

Choose the product categories to retrieve further information on them.

Rubber Bellow Seal

Rubber Bellow Seals are used in applications to seal out dust and environmental elements in applications with a motion or stroke.

Diaphragm Seal

A Diaphragm Seal is a flexible membrane that seals and isolates an enclosure. The flexible nature of this seal allows pressure effects to cross the barrier but not the material being contained.

As elastomers are limited to low pressure applications, sometimes it might be necessary to use fabric reinforced materials to achieve a long lifetime.

Flat Seal

Flat Seals in rubber are typically punched products to seal static applications where there is no movement between sealing surfaces, e.g. flanges.

Frame Seal

A Frame Seal is a static seal between two housings.

Grommets

Grommets are used to seal electrical cables against plug-in terminal blocks, for example, in cars.

Special Piston Seal

Special Piston Seals are used in cylinders for fluid sealing. They are internal to the cylinder head and seal against the cylinder bore, preventing fluid from flowing across the cylinder head. This allows pressure build up on one side of the piston, making the cylinder extend or retract.

Protective Elements

Protective Elements made from rubber are used to seal out dust and environmental elements in static applications.

Special Rod Seals

Special Rod Seals are usually used in cylinders for fluid sealing. They are external to the cylinder head and seal against the cylinder’s rod, preventing leakage of fluid from within the cylinder to the outside.

Special Rotary Seals

Special Rotary Seals are used in components with oscillating or rotating parts to keep lubrication fluids in while preventing ingress of mud and water.

Rubber-to-Metal Bonded Seals

Rubber-to-Metal Bonded Seals comprise a metal component and an elastomeric seal bonded inside the metal part. The metal part prevents over-compression and limits deformation of the elastomeric seal while the elastomer prevents leakage.

Rubber-to-Plastic Bonded Seals

Rubber-to-Plastic Bonded Seals comprise a plastic component and an elastomeric seal bonded together. The plastic part prevents over-compression and limits deformation of the elastomeric seal while the elastomer prevents leakage.

Safety Element

A Safety Element is defined by its safety-critical function and is frequently found in life sciences, aerospace or gas applications.

Special Scrapers

Special Scrapers or Wipers are installed in the sealing configurations of cylinders to scrape dirt, foreign particles or moisture from the piston rods as they retract into the system. A scraper prevents contamination of the media that could damage wear rings, seals and other components.

Sealing Ring

A Sealing Ring has a rotationally symmetric profile and functions mainly as a static sealing element.

Rubber Valve Seals

Rubber Valve Seals (YD) allow fluid, either a liquid or a gas, to flow through it in one or two directions.

Vibration Damper

A Vibration Damper prevents unwanted mechanical vibrations which can have a negative impact on the proper functioning of machines and apparatus.

What do you think is the reason we categorize them?

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Engineered Molded Parts

Before starting this lesson about Engineered Molded Parts, please observe the following instructions:

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Welcome to the e-learning module on Engineered Molded Parts.

In this first lesson, you will get an introduction of what Engineered Molded Parts are.

The second lesson deals with product design at Trelleborg Sealing Solutions in detail, and lesson three takes a closer look at manufacturing and quality at Trelleborg.

At the end of this lesson you can test your knowledge in our quiz section and get a certificate after successful completion.

This lesson will take approximately 20 minutes to complete. We hope you enjoy it and wish you continued success!

In the next 20 minutes, we will show you what Engineered Molded Parts are, what they are used for, and in which categories they can be divided.

During the course, we will also explain how important the customer specifications are and how Trelleborg Sealing Solutions can help achieve your requirements.

In the next 20 minutes, we will show you what Engineered Molded Parts are, what they are used for, and in which categories they can be divided.

During the course, we will also explain how important the customer specifications are and how Trelleborg Sealing Solutions can help achieve your requirements.

Introduction to Engineered Molded Parts.

High efficiency or condensing boilers have a heat exchanger that uses heat in the flue gases to pre-heat water. For this heat exchanger, several sealing solutions are requested - an application with lots of challenging requirements.

Do you think standard seals can be used here? No, because of the geometry, standard seals cannot be used.

In this case, "Engineered Molded Parts” are needed. They can be defined as parts with an individual geometry, designed for a specific application. Engineered Molded Parts by Trelleborg Sealing Solutions offer several advantages, for example, they can be adapted to difficult design windows.

There are 8 factors that are relevant to the design and production of Engineered Molded Parts: Relationship, Price, Design Competence, Material Competence, Supply Chain Management and Delivery Time, the Quality of Parts and Processes, Added Technical Value, and Manufacturing Know-How.

How important do you think these factors are? Please rate their importance by marking the respective value.

High efficiency or condensing boilers have a heat exchanger that uses heat in the flue gases to pre-heat water. For this heat exchanger, several sealing solutions are requested - an application with lots of challenging requirements.

Do you think standard seals can be used here? No, because of the geometry, standard seals cannot be used.

In this case, "Engineered Molded Parts” are needed. They can be defined as parts with an individual geometry, designed for a specific application. Engineered Molded Parts by Trelleborg Sealing Solutions offer several advantages, for example, they can be adapted to difficult design windows.

For us, customized Engineered Molded Parts are more than just a product. We offer holistic solutions, tailored to customer needs and project requirements - neither over-engineered nor under-performing. Therefore, it is important to carefully specify the requirements. Then we can adapt our modular, flexible service system, according to these requirements.

Call up the 8 factors to retrieve more information.

Relationship

What does the factor Relationship mean?

Clear and regular communication, trust, mutual success and a win-win-situation for both customer and supplier. Strength, knowledge transfer, project management, reliability, stability and a long-term partnership, …

What does Trelleborg Sealing Solutions offer?

• Global Network

• Knowledge Transfer

• Local Contact

• Services & Tools

Can you specify the required grade of Relationship in your project?

Here is an example for rating of the factor Relationship

We want a development partnership and weekly meetings.

Design

What does the factor Design mean?

Application know-how and experience, network enabled development, innovative ideas, CAD drawings, Finite Element Analysis, test capabilities, …

What does Trelleborg Sealing Solutions offer?

• Simulation

• Drafts

• Testing

Can you specify the required grade of Design know-how in your project?

Here is an example for rating of the factor Design

Our challenge is to develop four completely new seals for our heat exchanger.

Price

What does the factor Price mean?

Reaching the target price, price-performance-ratio in line with the specifications,…

What does Trelleborg Sealing Solutions offer?

• Parts

• Service

• Molds

Can you specify the importance of reaching your target Price in this project?

Here is an example for rating of the factor Price

If we reach the target price for the parts, we accept sharing the design costs and mold costs.

Material

What does the factor Material mean?

Comprehensive material portfolio, chemical and physical properties, application know-how, environmental factors, institute approvals, testing capabilities, material development and mixing capabilities, …

What does Trelleborg Sealing Solutions offer?

• Developing

• Mixing

• Recommendations

• Testing

Can you specify the required grade of material competence in your project?

Here is an example for rating of the factor Material

We need a material with a very good chemical resistance to aggressive condensate and a temperature range from -20°C to +130°C.

Supply Chain Management

What does the factor Supply Chain Management mean?

Comprehensive services including advanced delivery, logistics concepts, special packaging (skin top, blister, tube, …), assemblies, special marking, delivery time for samples, …

What does Trelleborg Sealing Solutions offer?

• Central Warehouses

• Logistics Concepts

• Service

• On-time Delivery

Can you specify the most important SCM services that are needed to launch the project in time?

Here is an example for rating of the factor Supply Chain Management

We need high-quality samples as soon as all necessary components for a functional test are available.

Quality

What does the factor Quality mean?

Surface quality according to Trelleborg Sealing Solutions Standard, specific quality levels (e.g. ppm), according inspection plan, visual inspection systems, integrated / advanced quality management system, …

What does Trelleborg Sealing Solutions offer?

• Standards

• Processes

• Product Quality

Can you specify the required grade of Quality in your project?

Here is an example for rating of the factor Quality

The defined quality should ensure the expected function and lifetime.

Added Technical Value

What does the factor Added Technical Value mean?

Low friction coatings, high degree of technical cleanliness, marking, …

What does Trelleborg Sealing Solutions offer?

• Visual Detection

• Low Friction

• Technical Cleanliness

Can you specify which Added Technical Values are required in your project?

Here is an example for rating of the factor Added Technical Value

There’s no special need for this kind of service.

Manufacturing

What does the factor Manufacturing mean?

Shoulder-to-shoulder development for all stakeholders including manufacturing, proper mold design, stable processes, zero-defect-philosophy, highly automated and innovative production processes, …

What does Trelleborg Sealing Solutions offer?

• Mold Design

• 2K Parts

• Rubber Seals

• Rubber-to-Metal Seals

Can you specify the required grade of Manufacturing Competence in your project?

Here is an example for rating of the factor Manufacturing

The special 3D shape of one of the seals requests high competence in mold design and manufacturing.

After the requirements regarding the 8 factors have been analyzed and defined, a specification of our unique mix of values is generated.

This specification helps us to optimize the cost-performance-ratio, reach the target price and to understand the requirements correctly.

It also enables target oriented development, a professional approach for all activities, the prevention of mistakes, shorter time-to-market and products in line with our total quality philosophy, only to name a few.

Now we have reached the end of the first lesson of the Engineered Molded Parts module. We explained what Engineered Molded Parts are, what you need them for, and in which categories they can be divided. We emphasized how important the specifications are and how Trelleborg Sealing Solutions performs each of the 8 relevant factors.

Please also try the other lessons that cover “Product Design” and “Manufacturing and Quality” at Trelleborg Sealing Solutions. But first, you can test your knowledge about this lesson in the following quiz.