LEDAUTFiberglass Heat Wrap Wire Shield Sleeve 1/2" ID x 10' Black LDFHG15300

Can I use this on my 1/4 " rubber lawn mower gas line to stop vapor lock?

Could you slide this onto the exhaust pipe instead of the wires surrounding it?

Will this stretch to accommodate something just barely over 1”?

Will your 1/2" work fit over 1/0 guage welding cable..The outside diameter listed for the cable is 0.55