US Patent 12123338 Hybrid proximity seal

A thermostatic valve assembly for an internal combustion engine cooling system. The thermostatic valve assembly including a valve housing and a plunger assembly. The valve housing includes a chamber, an inlet port, a radiator output port, and a bypass output port. The bypass output port including a flow opening. The plunger assembly being slideably secured within the chamber and moving between a first position to close the flow opening and a second position to open the flow opening. The plunger assembly comprises a body and at least one seal configured to seal the flow opening when in the first position.