How can a little piece of rubber save the day

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As the info in the sidebar says, I’m Sebastian Horstmann. Ever since I was given a project involving adhesives during my university studies, I became fascinated by adhesives and the power of joining two substrates by what is basically a combination of physical and chemical reaction. I know – does it get more nerdy than that? Well, nerdy or not, one thing led to another and starting from that project, through my PHD thesis, adhesives in engineering became my career choice.

Strangely enough, as much as the modern engineering has developed and changed since its early days, some methods remain very traditional. Bonding as a joining method appears to still be a kind of a novelty, which really shouldn’t be the case. Human kind has used adhesive since ages. Well known is bonding of arrows for hunting back in Stone Age Times as an example. And there are many more. On the other hand, it isn’t really surprising, given the fact how little young engineers find out about bonding through regular educational channels. Over the years of supporting engineers in a number of different industries, I encountered some of the same questions numerous times which made me want to share the solutions (which are sometimes surprisingly simple) in this online format.

Testimony to the simplicity of some of the solutions are o-rings. They are basically simple, modest rubber profiles. But, if one of these plain little things fails, it can cause a lot of trouble. O-rings are very commonly used rubber seals that appear on pumps, valves, hydraulic cylinders… Malfunctioning of o-ring seals can cause leakage of fluids which were supposed to stay within closed systems. That may mean shutting down of production processes, but also present health and safety hazard, depending on the type of liquid that’s leaking out. Standard o-rings come in predefined sizes, which means that you need to keep stock of different sizes for maintenance of your machinery. However, using Loctite 406 instant adhesive and round rubber profiles, you can at any time create any size of an o-ring you require. Simple. Nothing to it. And yet, when it solves a leakage and prevents a major repair on a Friday afternoon, comes as a lifesaver, at least as far as your weekend is concerned. You can check out how to work with it in this short video:

Loctite o-ring application video

Loctite  406

Loctite 406 Bonding of a rubber o-ring

In my next posts I’ll talk about similar simple solutions to engineering problems. Solutions that are so simple they should be obvious, like securing your threaded fastners to prevent vibration loosening, sealing your threaded joints and much more. Also, I’m happy to answer any questions or exchange comments with you, so go ahead and talk to me through the comments section. Your thoughts will be appreciated.

 

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