Aquatop's aquarium safe, silicone-based lubricant for all aquarium filter housings that use o-rings, gaskets or seals. Provides lasting protection for all o-rings and seals to help prevent water leaks. A low cost lubricating solution for water filter housing o-rings, submersible pumps, hoses, sprayers, plumbing projects, and many other applications. Protect your o-rings from drying out or cracking. Works on all brands of aquarium or pond filter housings. Product comes in a resealable, waterproof plastic container.