The Permatex 22071 water pump sealant is an RTV silicone gasket maker formulated to stay sealed against engine coolant, which is why it is used on water pump and thermostat housing joints. Coolant exposure is the reason to reach for a product like this instead of a general-purpose sealant on cooling system work. Pro Gear and Transmission sells Permatex sealants for heavy-duty truck shops. Call us if you want help matching the right sealant to your job.
Features
RTV silicone gasket maker for water pump and thermostat housing joints
Formulated to stay sealed against engine coolant
Permatex part number 22071
