It can be applied randomly and not really needed. Permatex 22071 water pump and thermostat rtv silicone gasket 05 oz 05 ounce.
Water Pump Gasket Spray Sealant Page 3 Land Rover Forums
Water pump gasket sealant or not. Some seals are so thin you could easily damage them when you rip off the packaging. If your new pump comes with a seal make sure its in impeccable condition before installing it. Permatex makes a specific gasket sealer for your water pump gaskets. Highest water glycol resistance available in an rtv silicone. Usually sealer is used to hold the gasket on the water pump. He shows where sealant should be applied on certain gaskets and in what amount.
If it is not used the gasket will become wrinkled or possibly fall off during install. In certain cases however it is required when mating gaskets or filling gaps. When changing a water pump replace all old gaskets and seals with new ones. Highest water glycol resistance available in an rtv silicone. A noncorrosive sensor safe rtv silicone gasket material formulated specifically for water pumps and thermostat housings. Water pump and thermostat housings part 22071 i used it and its great stuff.
Permatex water pump thermostat rtv silicone gasket maker a non corrosive sensor safe rtv silicone gasket material formulated specifically for water pumps and thermostat housings. Dont apply sealant to an o ring or a dry seal. Fel pro ase certified master technician john gurnig provides examples why most fel pro gaskets do not require the use of sealant.