Hopefully, this isn't too off-topic or repetitive.

I'm writing my dissertation, and I am finishing up the last chapter discussing some of the experiments I did. In that chapter, I discuss a pump I ordered from a seller on Amazon, and the website has a perfect exploded view CAD drawing of the pump for my use.

I want to use this image, and I have already contacted the seller in the comments to see if I can use the picture. But I'm not sure I will get a reply. 

I've looked online and found resources that say I can use the image without citation, saying it falls under fair use. Others say that I need to get written permission from the seller and from Amazon itself. This [question][1] says it's all about copyright, and I agree; I don't know 1) **whether the image is copyrighted** or 2) **who to reach out to** to get the most direct reply.

Are the images the seller uploads on Amazon copyrighted? And if so, can I go to the author or should I contact someone at Amazon directly?


  [1]: https://academia.stackexchange.com/questions/68463/do-i-have-to-request-permission-from-a-website-to-use-an-image-that-they-use-to