White sealant, ideal toolbox product for all metal fittings that wont spill or leak. NSF approved.LOCTITE 561 is an white, semi-solid methacrylate thread sealant stick, an ideal toolbox product for maintenance and repair that wont spill or leak. Fast, reliable curing on metal, tapered pipe threads and fittings with a thread size up to M80/R3€; its breakaway torque rating is 2Nm. This is a low strength product for easy disassembly. Service temperature is from -55 to +150ºC; NSF approved.