Tri-Clamp Thermowell From Reotemp Instruments  Tri-Clamp Thermowells make it possible to remove instruments without dropping pressure or losing contents.  Provides 3-A certified Sanitary Protection for Temperature Probes All 316L S.S. Construction Fast Installation & Removal with Triclamp connection Finish Exceeds Ra 32 max. Exceeds 3A #4 Finish