Precision Rubber Parts

        Customized. Worldwide. Since 1976.

Learn more

Latest news from our blog

Merry Christmas & Happy New Year!

21. December 2021

We wish you all a Merry Christmas, happy holidays and a happy, successful and above all healthy New Year 2022.

Enjoy your time and stay healthy.

We will also treat ourselves to a few quiet days.
From 23.12.2021 to 02.01.2022 the Hepako will therefore be closed. We will be back for you from 03.01.2022.

We look forward to being here for you again next year.

The Most Important Rubber Diaphragm Designs

07. December 2021

You might not be aware, but rubber diaphragms are an essential component for an assortment of applications.

They provide a superior seal for pumps, valves, regulators, actuators, hydro-accumulators, and many other parts. Not only are they versatile, but they also come in several different designs, with each of them containing its own specific pros and cons.

When choosing the right rubber diaphragm for your needs, you need to consider which design will be suitable for what you plan to use it for. For example, are you best to go with a dished diaphragm that is designed to stretch to its maximum height, or should you choose a more versatile design such as the rolling diaphragm?

If you’re not sure where to start, here is everything you need to know about the variety of rubber diaphragm designs that are available.

Butyl Rubber (IIR) / Bromobutyl (BIIR) / Chlorobutyl (CIIR)

14. September 2021

Around the forties of the 20th century, butyl rubber (often just called “butyl”) was developed and brought to market by Stand Oil of New Jersey (now Exxon Mobil). The development of the thermoplastic polyisobutylene (PIB) by the German company BASF served as an important basis.

Butyl is generally a fairly flexible material, but in practice it is used primarily because of three special properties: its low gas permeability, its excellent damping over a wide temperature range, and its very good elasticity in cold conditions. The variants bromobutyl or chlorobutyl are frequently used, although for simplicity's sake we often just refer to "butyl".

In the following blog post, we will go into both the general and special properties of butyl, bromobutyl and chlorobutyl and list the most important fields of application.