Bolt-mounted metal shell

National military standard product. The base is made of oxygen-free copper and brazed with molybdenum sheet, hence boasting reliable air impermeability. A gravity buffer structure is adopted to ensure that the sealing performance of the shell would not be damaged after the outer lead is battered. Available performance: air leakage rate ≤1×10－11Pa·m³/s; insulation resistance≥1×10^9Ω（500VDC）; temperature cycle: -65～175℃, 1000 times; thermal shock: -65～150℃, 15 times