The SOR (Static-O-Ring) measurement series is engineered for high-integrity pressure, level, temperature, and flow switching in demanding oil and gas, power generation, and chemical processing environments. Distinguished by their dual-snap disc design and robust mechanical sensing elements, SOR switches provide exceptional setpoint stability and resistance to vibration or high-cycle fatigue. This collection features a comprehensive range of explosion-proof (Division 1 & 2) and weather-tight enclosures housing pressure transmitters and mechanical switches capable of handling extreme process conditions—from vacuum to 7000 psi (480 bar). With high-performance wetted materials such as 316SS, Monel, and Hastelloy, these instruments ensure precise limit control and safety interlocking. Whether you require a standard 12-series pressure switch or a customized Level Controller with Vapor Seal technology, our SOR inventory delivers the mechanical reliability required for mission-critical process instrumentation.