Insulating block basement before backfill
Stay away from sealants that are applied on the INSIDE of the house/foundation. Water-control mgmt. should be addressed OUTSIDE the house BEFORE it comes into the house.
In short, use a material that's rated for BELOW ground use and is compatible with high degrees of hydro-static pressure. Be sure to have sloped landscaping AWAY from the foundation.
My best to ya and hope this helps.
Jay J -Moderator
PS: God Bless America!