York S1-3110-3571 Sequencer Is this a standard O-ring

Is this a standard O-ring or a flat gasket

professional finish while doubling down on the protection of your pneumatic control system

this component is critical for maintaining the correct manifold pressure and heat output

as an HVAC technician

Common Questions What is the difference between nominal size and OD for this part

York S1-3110-3571 Sequencer Is this a standard O-ringThe York S1 3110 3571 Sequencer is a critical multi stage control designed for precise management of heating elements and blower motor timing in electric furnaces. This electric heat sequencer 2 stage relay prevents high amperage inrush current by staggering the activation of heating coils, effectively protecting the buildings electrical infrastructure from surge related trips. Built to exact York S1 3110 3571 specifications, this component features a