Shower waterproof cap

[Lee221]

Hi,
I have my bathroom done up last year. The builder forgot to put the waterproof cap on the shower, now it is getting rusty inside. I wonder if anyone know where to buy this cap? I am not even sure what it is called?

Thanks[GALLERY=media, 106125]IMG_20210223_132525 by Lee221 posted 23 Feb 2021 at 1:32 PM[/GALLERY]

 

[just pumps]

Clear silicone perhaps?

 

[Madrab]

+1, green scourer in there to clean it up, then use an allan key and take that grub screw out and clean it as it's going rusty, put a little silicone grease on it then seal it up with some clear silicone

 

[Lee221]

thank you for the advice. Will the clear silicone be easily taken out when access to the grub screw needed in the future?

 

[just pumps]

thank you for the advice. Will the clear silicone be easily taken out when access to the grub screw needed in the future?

Could be a touch fiddly, would need a sharp pointy knife like a craft knife and a pair of tweezers to pull with.