1.seal material: butyronitrile,silicon,fluorine,rubber,PTFE 2.surface glass:organic,tempering,PVC,double explosion-proof glass - Structure:normal type,stainless steel type(anti-shock),electric point type,remote type,capsule pressure gauge- Material of meter body:08F jet black plastic,electroplate,304SS,aluminium and etc.- Connecting screw:M10×1,M14×1.5,M20×1.5 or according to order.- Material of ...