According to this thread: https://vexforum.com/t/answered-vex-pneumatic-reservoir/18839/1
the part number for the vex pneumatics reservoir is NCME-0400-X6002.
After digging though many webpages, I found these two pages:
NC(D)M Stainless Steel Cylinder Double Acting Single Rod Standard
NC(D)M All Stainless Steel Cylinder Double Acting Single Rod X6009
However, the models on both pages do not seem to be accurate as the end caps (where the fittings screw in) are completely solid. As what I’m doing involves stress simulations, this won’t work.
Is there an accurate model available?