Stack Exchange network consists of 176 Q&A communities including Stack Overflow, the largest, most trusted online community for developers to learn, share their knowledge, and build their careers.
Aviation Stack Exchange is a question and answer site for aircraft pilots, mechanics, and enthusiasts. It only takes a minute to sign up.
What specific material are Water Vapour Resistant (WVR) engine bags made from?
The specifics will depend on the product. Bags by Aerotest are made from supported PVC textile and coated with acrylic lacquer.
Required, but never shown