Any wheel bearing grease will do well. Go to your local big box discount store or parts house and get a 1lb. tub of wheel bearing grease. Or, if you prefer a cartridge, get that. Any brand name will do, and most off brands will be fine, too. It can also say multi-purpose, but should say wheel bearing. All greases are slick. What you're looking for is higher heat resistance which is generated by brakes. This is more important for disc brakes, as they generate more heat closer to the hub. But any mineral base product will serve you well. Avoid the hype about synthetic greases at more than double the cost. It's overkill for your application, and will only serve to empty your wallet.
