QianCap pressure monitor-25 from Q Labtech is designed for monitoring internal pressure on pressure tubes, flasks and bottles with #25 internal threads. 0-300 psi pressure range.
The set contains all items needed for immediate use: Pressure release system, 1 PTFE adapter-25H, 1 Simriz O-ring-25-S, 1 stainless steel pressure gauge-300 psi, 10 septa-12 mL.