Features • Vapor resistant, flame retardant polypropylene terminal. • Heavy wall metal sheaths available in 316 stainless steel, carbon steel, incoloy and titanium. 316 Stainless Steel standard with metal explosion resistant M2 terminal enclosure. • Vapor-resistant, painted metal enclosures. • Grounded construction and built-in P1 thermal protector for solutions up to 180°F (82°C). • Temperature and level controls sized to match the heater. • Lower watt densities for highly viscous solutions and long service life (up to 40 watts per square inch - 6.2w/cm2). • 3” and 5” fluoropolymer flanged heaters.