Is the 3 in. Plastic Adjustable Pipe Flashing with Hard Base and Rubber Collar recommended for metal roof?

The 3 in. Plastic Adjustable Pipe Flashing with Hard Base and Rubber Collar is not recommended for a metal roof.

The 3 in. Plastic Adjustable Pipe Flashing with Hard Base and Rubber Collar is not recommended for a metal roof. It is designed for a shingle roof. There are other pipe boots for metal that can be sealed to the metal with a butyl sealant and screws.