The part numbers and descriptions for our current pistons are as follows:
Reactor-Ready, Reactor-Ready Duo and Lara pistons are 15 mm.
- RR161100: Piston 15 mm for Single Jacketed Vessel
- RR166055: Piston 15 mm for Vacuum Jacketed Vessel
Reactor-Ready Pilot pistons are 25 mm.
- RR166070: Piston 25 mm for Single & Vacuum Jacketed Vessel
The piston O-rings are also available separately (as is the black plastic ring holding the handle on).