*100,000 -300,000 times life span. *O.D: 8-120mm. *Working Temp.:-194--+400 C. *Army Technology. *Reasonable price. metal bellows1.1) function :sensing pressure and outputting the axial displacement or angle displacement by stretching or contracting1.2) material :alloy: stannum and bronze QSn6.5-0.1, brass H80, stainless steel: 1Cr18Ni9Ti, 1Cr18Ni9, 0Cr19Ni9.1.3)specifications: outside diameter ...