1.0-5.0 Bar Pressure Switch - 2019-4262 For Pneumatic and Hydraulic Media Applications. These Pressure Switches are fitted with a high resistance NBR rubber diaphragm and are suitable for many applications, particularly for the control of pneumatic and hydraulic pressure. They are also suited to applications where a high number of repeatable operations is required. Wetted Parts: Body: Brass Diaphragm: NBR Rubber Damper Spring: Stainless Steel Microswitch: 10 amp