Suntan in single turn cermet potentiometers suntan tsr 3386p 503r fully enclosed 50k 38in 10 05w single turn cermet potentiometer from the suntan wr3386p series sealed to withstand industrial cleaning solvents and harsh environments used for trimming the value of a resistor and commonly used for calibrating instruments suntan tsr 3386p 503r 50k wr3386p 38 1 turn cermet trimmer