Yes, it's possible but it requires a thick jacket. the formula for a thin-shell cylindrical pressure vessel is \sigma = rp/t, where sigma is tensile strength of the material, p is pressure, r is radius, and t is wall thickness. For thick-shell jackets, the formula is slightly more complicated [1] but you get the idea.
For Kevlar, max \sigma is 3.6GPa. So it's possible to maintain an internal pressure of 200GPa (2MBar), but the wall thickness must be much larger than the inside radius.
For Kevlar, max \sigma is 3.6GPa. So it's possible to maintain an internal pressure of 200GPa (2MBar), but the wall thickness must be much larger than the inside radius.
[1] https://tge.readthedocs.io/en/latest/content/mechanical/thic...