These RTD's are constructed with an epoxy filled transition to lead wire. This transition allows for higher temperature construction in the metal sheathed portion of the RTD assembly along with providing a mounting point for flexible armor protected leads. The RTD lead configuration can be 2-wire, 3-wire, or 4-wire with either single or dual elements. The 316 SS sheath is available in sizes ranging from 1/8" to 3/8" O.D.