... corrotion resistance 2.K,N,E,J.T,S,R,B 3.SS304/SS310/SS316/SS321/INL Thermocouple especially used in power ... plant Abration and corrotion resistanceModel:K,N,E,J.T,S,R ... thermoelectric potential deterioration,disconnection etc,whereas WR-K serial sheath thermocouple uses magnesia for its insulation with fine air-tightness&compactibility ...