1.Item: metal welded bellows
2.Vacuum Leak Ratio: 1*10-4Pa·L/S~1* 10-7Pa·L/S
3.Use Temperature: -251~450°C
4.Compression Ratio: 80%
5.Service Life: 10~100Hz
6.Material: SUS 316L,AM350 or Hastelloy C
7.Size: Design according to customers’ requirement