3D Sublimation Machine Spare Part in the UK - Silicone Mat

HI Everyone, I wanting some advice i have the 3D Sublimation Heat press and have had it for around a month.
I have gone through 2 Silicone Mats, my question are

Is the a supplier in the UK, as i'm sruggerling to find one for parts?
Has anyone tried to repair the silicone mat?
Is the a way of making them last longer?

thankyou for any advice :-D

I think signwizard in Birmingham have them.

for repair small holes/splits silcone check this vid at time 10.34.

https://www.youtube.com/watch?v=c1kJ3w7rPVU