Loctite 567 PST Thread Sealant with PTFE Top Pick Loctite 567 PST Thread Sealant with PTFE is a general purpose instant sealer for tapered and straight/tapered fittings. Controlled strength for easy disassembly. It has excellent solvent resistance, allows easy assembly, prevents galling and can withstand temperatures up to 400 F (204 C). Excellent for high pressure applications: locks and seals tapered metal, pipe threads and fittings. Ideal for stainless steel, aluminum, galvanized metal and other inert metals. Disassembles with hand tools. CSA 3319-81 and 3319-01. UL MH007(N). NSF/ANSI 61 Certified. ULC-Canada Approved. CFIA Approved.