My bad. This is a bad translation from Hebrew we have only one word for both pipe and hose. What got deformed was silicone hose look like collapsed under vacuum and blocked the flow of the coolant
Oh, ya, that's not the silicone hose. Every hose will do that if you have excessive air in the system and it causes enough vacuum pressure. Just bleed the coolant system properly. Sounds like the silicone hoses are totally fine. If you want to pay for shipping to the USA, I'll gladly take you up on the free silicone hoses.
