... rubber seal materials, Forming a mold used to make products with no side seams, sealing performance can be ... resistance voltage insulation resistance in full compliance with international standards.5,Multi-fiber differencesHDA-09- ... , 72 hours, pressure does not drop. Temperature cycle: room temperature 20 °C, high and low ... hours, 12 small cycle, the internal air pressure 60 KPa ± 5KPa to 10, the air ...