Hercules, 4 OZ, Megaloc Thread Sealant, Highest Performing Thread Sealant On The Market, For Use On Both Plastic & Metal Pipe & Fittings, Grit Free & Does Not Contain Teflon, Sets Soft, No Cure Time Required, Never Hardens, Cracks, Or Becomes Brittle, Non-Separating, Non-Flammable, & Non-Hazardous.