Yes. 35 and 38 should be soft and pliable. Basically, all of the connectors should be soft. I was extremely careful when I removed 35 because it was so brittle. Little pieces fell into the hole, but I was able to remove all of them with tweezers and bent nose pliers. None of the tubes were affected by heat or age, but I bought them new anyway. None of these parts have o-rings.

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