Chemicals & Fluids › Optimum Black Hi-Temp RTV Silicone Image 1 of 1 Optimum Black Hi-Temp RTV Silicone $19.95 Easy to DisassembleMaximum flexibility and maximum oil resistanceSensor-safe, low odor, non-corrosive415% stronger and 60% more flexible than Ultra BlackResistant to auto and shop fluids, and vibration Quantity: Purchase Added! Easy to DisassembleMaximum flexibility and maximum oil resistanceSensor-safe, low odor, non-corrosive415% stronger and 60% more flexible than Ultra BlackResistant to auto and shop fluids, and vibration