Good questions. I asked also about the tube. They said it's not glass it's a special plastic, pressure and heat resistant. You shouldn't have any problems clouding up during the cars lifetime. It's what they told me. In case of a defect it must be done by a professional aluminum welder. He will have the tools to work with it. They do offer a warranty but shipping it back would be more expensive then having it fixed locally. It's what I think.
Don't know about the sealant. Some paste they use.
Glad you liked it
Don't know about the sealant. Some paste they use.
Glad you liked it