Intake manifold question

Is thread sealer or teflon tape needed?

I've been having very god luck with a product called High Tack.

http://www.permatex.com/products-2/...ts/permatex--high-tack--gasket-sealant-detail


Fast-drying all-purpose sealant dries to a highly tacky, non-brittle film. A reliable general adhesive remains tacky indefinitely – can be applied in advance for convenience in assembly. Remains effective at temperatures of -65°F to 500°F (-54°C to 260°C). Sensor-safe. Resists gasoline, oil, antifreeze, axle lube, kerosene, propane and butane.