, Company News
Hepako GmbH continues to grow

11. August 2020

Hepako GmbH, which specializes in the production of precision rubber parts, has expanded its site in Raisting, Germany. The extension on the existing site was completed in spring 2020. The operating area could thus be almost doubled.

More information can be found in this blog post.

FFKM (Perfluoro Rubber)

03. August 2020

When a molded rubber part has to withstand exposure to a highly aggressive chemical environment or perform well in high temperatures, FKM is your right choice. However, for some applications, even FKM reaches its limits and cannot be deployed due to exceptionally aggressive chemicals or extremely high operating temperatures. In these special cases, engineers and users turn to FFKM. This material that incorporates special perfluorinated monomers, in other words, entirely hydrogen-free monomers, has been developed to resist virtually all media, and withstand very high temperature stresses. It is known to many by the tradename Kalrez marketed by DuPont de Nemours.

In this blog post, we will be looking in some detail at the properties of FFKM and discuss how, even for FFKM, there can be important differences in its thermal and chemical performance.

What does FDA compliance mean for molded rubber parts?

01. June 2020

Molded rubber parts are used in many sensitive applications, and as such potentially could have a direct effect on the health of humans. Customers with business in the food sector have special requirements both for the molded rubber parts and the materials that go into making them. FDA compliance is important in this sector. It is also mandatory. The Food and Drug Administration (FDA) is the USA’s federal agency responsible for protecting public health. Its provisions function to ensure the safety of products intended for the American market. However, its regulations are also recognised globally. In this blog post, we will take a closer look at the FDA and examine the significance of FDA compliance in the manufacture of molded rubber parts.

HNBR (Hydrogenated Nitrile Butadiene Rubber)

02. April 2020

A while ago in our blog, we wrote about NBR (nitrile rubber) describing in detail its properties and applications. One of the drawbacks of NBR we mentioned was its modest heat performance, making it unsuitable for a whole swathe of applications. Hence, around the 1980s, HNBR was developed, a material that boosts the benefits of NBR with improved heat resistance. Catalytic hydrogenation of NBR produces the nitrile rubber HNBR, which in many respects outperforms conventional nitrile rubber NBR. However, the catalytic hydration procedure is not straightforward, resulting in HNBR compounds being considerably more costly. In this post, we investigate the properties of HNBR.

Applications / Case Studies
The role of hearing aids in the fight against dementia

03. February 2020

Each year, there are several million new cases of dementia. Alzheimer disease is the most common form of dementia. It is estimated that presently approximately 50 million people have dementia.   The World Health Organization, WHO, is forecasting a threefold increase by 2050. The consequences for those affected and their families are immense.

The illness is still incurable. However, research regularly presents new findings on dementia that lead to new treatment approaches and produce important information on preventive measures.

A broad-based study in Taiwan recently investigated the connection between hearing loss and dementia. The conclusions of the researchers together with the role that hearing aids could play in the battle against dementia is the focus of this blog post. 

Fluoroelastomer (FKM)

04. December 2019

Superb resistance to aggressive chemicals and excellent behavior at high temperatures has made fluoroelastomer highly important in a wide range of industrial sectors. Articles made of FKM are used in many applications and characterized by a long service life and excellent properties under difficult environmental conditions, and good performance under dynamic load stress. The first fluoroelastomer was manufactured in 1955 and has since been known primarily under the brand name Viton, marketed by the US chemical company DuPont (now DuPont de Nemours).  

In today’s blog post, we outline the different types of FKM and delve into the details of the mechanical, thermal and chemical properties of the material.

Applications / Case Studies
Molded rubber parts in hydraulic systems

30. September 2019

Hydraulics are crucial across many technical applications. Basically, they are utilized whenever a system is required to transmit a force or energy with the aid of a liquid. Examples in which hydraulics provide power transmission are motor vehicles, agricultural machinery, brake systems, machine tools, presses, injection molding machines or lifting platforms. Rubber parts are essential for hydraulic systems to function. Without rubber molded parts such as seals, scrapers and O-rings, there would be no hydraulic systems. In this blog post, we discuss the basics of molded rubber parts required by hydraulic systems, describing the special demands placed on the performance of the elastomers, and the main materials suitable for use in hydraulics.

NBR (acrylonitrile butadiene rubber)

05. August 2019

The automotive industry is a major consumer of technical moldings and other rubber products. Its specific requirements, particularly regarding resistance to mineral oils, fuels and greases, have made NBR a vitally important raw material in this sector. Acrylonitrile butadiene rubber, developed by Bayer in the 1930s, in short: nitrile rubber, is an excellent solution for many applications due to its properties and therefore will be the focus of this blog post.

Materials, Manufacturing, , Applications / Case Studies
Rubber components for the medical technology market

03. June 2019

Irrespective of whether a molded rubber part functions as a stand-alone medical device or is a component in a medical device – the medical technology market is heavily dependent on molded rubber parts. The manufacture of rubber parts requires a range of considerations to be taken into account, both in terms of the production technology and organization, to ensure compliance in this safety-sensitive sector. What exactly suppliers to the medical technology sector need to pay particular attention to is explained in this blog entry. In addition to production-specific challenges, we take a close look at aspects such as biocompatibility, quality management and cleanroom production.

Company News
HEPAKO new member of VDMA Medical Technology

12. May 2019

Hepako GmbH has recently become a member of VDMA Medical Technology. VDMA Medical Technology is part of the German Mechanical Engineering Industry Association (VDMA) and forms a platform for all aspects of production technology in the medical industry. The network targets the entire value chain, from material suppliers to mechanical engineering and medical technology manufacturers, right up to applications in hospitals.

EPDM rubber (ethylene propylene diene methylene rubber)

04. April 2019

Due to its all-rounder properties, the material ethylene propylene diene methylene rubber (EPDM) has found extensive application in a wide range of industrial areas. After its introduction in the 1960s, the use of EPDM increased rapidly, and it is now one of the most common elastomers.  Its versatility and good resistance against weather have made EPDM the material of choice for technical rubber products.   

In this blog post, we will discuss the various properties of EPDM in detail.

Applications / Case Studies
The importance of small hydraulic pressure accumulators with some examples of their use

01. February 2019

In the early days, before focusing on the production of precision rubber products, Hepako GmbH manufactured hydraulic accumulators and the accompanying rubber membranes indispensable for their function. At that time, Hans-Dieter Partosch, co-founder and managing director of Hepako GmbH for many years, published an article on the importance of small accumulators and examples of their application in the magazine Fluid - a German journal for hydraulics, pneumatics and component parts (edition Dec. 1979). Today's blog returns to this interesting and informative article, which has lost none of its relevance over the years. The original article is available as a download.

Company News
HEPAKO at T4M 2019

21. January 2019

We are going to exhibit at this year´s T4M. The trade show for medical devices takes place in Stuttgart from 7 - 9 May.

Please find more information in this blog post.

The value of technical data sheets

01. December 2018

Technical data sheets or material data sheets are part of routine business in all industrial sectors. They play an important role in the elastomer sector as the users of the data sheets are often very reliant on the information they contain. The topics under discussion in this blog posting are: How helpful are the material data sheets in reality? The problems associated with them and what to look out for when performing an evaluation. In addition, we look back at the tragedy of the 1986 Challenger space shuttle disaster and how it was linked to this issue.

Why silicone is so popular

29. September 2018

While the majority of elastomers like EPDM, FKM or NBR are unknown to the end user, silicone rubber is a material just about everyone knows. Although silicone rubber is inferior to other elastomers when it comes to mechanical properties, there are applications in virtually every industry. The reason for is explained in this blog.

Elastomer mechanical properties and how they are measured

30. July 2018

In this post, we are taking a look at the different mechanical characteristics of raw rubbers and compounds. In addition, we are investigating the underlying test methods.

Materials, Manufacturing, Transfer Molding, Injection Molding, Compression Molding, Vulcanization
How do you create a rubber component? A blog around and about the world of elastomers

07. June 2018

Rubber parts, or elastomers, are irreplaceable in many areas of our lives; yet most people know little about them so it’s fair to say the subject remains vague and mysterious. In this blog our hope is to open up the subject and provide a new insight for as broad an audience as possible. Therefore, this first article is about general topics around rubber parts.