This plug has a usage ranger of 1.48"–1.65". It is not designed to be rolled over repeatedly.
This cannot be used. Oatey part #273328 can be used with this gas.
3.8"–4.06" is the usage range and these will work if the ID falls within that range.
The description says it all - this is a "test cap" which allows you to check for leaks before you seal it up for good. So - as far as your question - are you looking short-term or semi-permanent? (Hardly anything is truly "permanent".) This product is intended to be short-term.
The usage range is 1.48" to 1.65". The 2" Gripper usage range is 1.9" to 2.17".
No - you would need a 2" Pneumatic Test-Ball #270024.
3.8" - 4.06"
No this has a usage range of 1.48"–1.65".
No. Leave the plug intact and just loosen before inserting into the pipe. Then tighten the nut to expand the rubber and create the seal.