mtm foam cannon question

[azi90]

Hi,
I may have a really noobish question but i think its better to ask before i damage something lol

So i received my MTM foam canon however the end which meets my pressure washer wand (sorry for not knowing the exact part names) has white coating on it.

Now do i take this coating off before screwing it on the foam cannon or not?

if i dont take the white coat off the screw only goes in 25% no matter how hard i try, im scared under pressure this will just blast off.

Here is the picture of what i am talking about
2017-05-10 23.34.43.jpg

[Ancient_1]

You leave it on. It is Teflon tape to help seal the threads.

[azi90]

So i am not able to screw it in more than a quarter with the tape on... is that normal? i dont want the whole thing to blast off under pressure

[briarpatch]

You could try maybe unwrapping one course of the tape...but do not remove it all