You don't need to order via Amel. It might be more expensive this way. Try to find a distributor for industrial rubbers in your country and look for foam rubber of 8 or 10 mm diameter depending the different portlights.
Don't take solid rubber. It will not fit. In Germany I have found: www.gummiprofile24.de
But there should be such a store in any country.
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Gerhard Mueller
Amel Sharki #60
Currently Kalamata, Greece