Excellent lube, plastic compatible and comes in a very good quality syringe. I use it in my darkroom to lubricate the moving parts of the CPU. to open it. Turn the tip barrel over to align with the hole in the syringe. Then gently push the plunger. Like all lube in a syringe, it will squeeze out when you squeeze hard! I cut off the tip of the syringe to expose the end. This allows for an accurate applicator. But you can shorten it even more. My only complaint is that I wish it was a little more accessible! Krytox is very expensive, but there is a cheaper way to buy it.