Originally Posted by
WhyFi
There's the problem.
Stan's is great for MTB but has seen mixed results, to put it kindly, at road pressures. My general recommendation would be to use a sealant that has particulate (often glitter, or at least appears to be so) to help with plugging up punctures at higher pressures.
Yep. Orange Seal ftw.
And the OP should get a plug kit.
This one is inexpensive and works just fine.