Standard Brass with NBR diaphragm wetted parts.
. Switch adjustment ranges from vacuum through 6,000 psi depending on model. 100 Series Pressure Switch, Brass, SPST, NC, 1/8" NPT, 50-150 psi, Weatherpack Tower CE compliant to suppress Radio Frequency Interference RFI, Electromagnetic Interference EMI and Electrostatic Discharge ESD.SPST creep action switch with Silver-plated contacts.