The suggestions in that linked thread are by using products you can get from just about anywhere. But yes, you could order the band clamps and some pieces of rubber from Amazon if that is your only or most convenient option.is it somthing available on Amazon ?
Kind of like thisI got a piece of the next size PVC pipe and used it as a patch to cover the hole. You cut it about 3" long and into 3 sections and glue it and leave the clamp on for extra grip on the pressure side
Wish I had a picture but it works great and doesn't look bad.