Mine was purchased with the D.E.I. header wrap.
Can says "D.E.I., Hi-temp silicone coating. 1500 degree protection. SEALS AND PROTECTS EXHAUST WRAPS."
I paid around $10.00 for a 12 ounce can.
Oh yes, it does smoke for the first 5-10 minutes. But I only do touch up every 2-3,000 miles after the original treatment.