Permatex High Temperature Thread Sealant with PTFE is OEM specified. Locks and seals threaded fittings. Resists leakage, vibration loosening, moisture, hydraulic fluids and diesel fuels. Lubricates threads for easy assembly and disassembly. Won’t shred or wear like Teflon tape. Parts may be repositioned up to 4 hours after application. Temperature range -54° C to 204° C.