... ~ 106 KPa At room temperature tightness: internal air pressure 70 KPa, 72 hours, pressure does not drop. Temperature cycle: room temperature 20 °C ... four hours, 12 small cycle, the internal air pressure 60 KPa ± 5KPa to 10, the air pressure drop no more than magnitude 5 ... observed 15 seconds without air bubbles escape. High-temperature seal: internal air pressure 70 KPa, at 60 °C to maintain 168 hours ...