Accumetric Boss 02583CL10 820 Pool & Spa 5.3oz Silicone Lubricant 82000 Water Resistant And Non-Solidifying Superb Llubrication For Rubber 0-Rings. Boss 820 Pool and Spa Lube is a silicon dioxide thickened,high molecular weight dimethyl polysiloxane-based material. It is a stiff, tacky dielectric compound with excellent water repellency Excellent release agent and lubricant for rubber and plastic parts such as O-rings, valves or plastic gears