3M Scotch-Weld Stainless Steel High Temperature Pipe Sealant PS67, White, 250 mL Tube, 2/case. 3M Scotch-Weld Stainless Steel High Temperature Pipe Sealant PS67 is an off-white, fast-curing, paste pipe sealant.Offering high-temperature resistance up to 400? C, this sealant provides a strong, tough seal that can be easily disassembled. We also formulated this high temperature pipe sealant to resist pressure and vibration for long-lasting durability. Cures quickly to seal hydraulic and pneumatic pipes and fittings - Prevents leaks and corrosion in pipes by strengthening bonds between pipe threads - Works on inactive surfaces, such as stainless steel, zinc and plated parts - Features high temperature resistance to 400? C - Formulated for easy disassembly - Designed to resist pressure and vibration, providing long-term durability.