3/4 inch PEX A pipe through Cinder Block

[Aaronac8]

I need to pass 3/4 inch PEX A pipe through a cinder block foundation wall, is drilling a 1 1/8 inch hole sufficient? Do I need to use an insulator around the pipe as it goes through the cinder block to prevent damage to the pipe from friction or movement?

 

[CT-18]

I would sleeve it in pvc