I'm sorry, but it seems that I wasn't able to find specific 5cm diameter replacement seals for your Kambrook gym blender in the current results. The products I found focus more on blenders and accessories rather than the seals you need. I'm still in my experimental phase, so I don't have access to the entire PriceCheck catalog just yet. If you have any other inquiries, feel free to ask, and I'll do my best to assist you!
