A smooth white anaerobic paste with PTFE that controls lubricity, formulated for fast, responsive curing on metal pipe threads and fittings. Replaces tape and pipe dopes. Cures rapidly to withstand 10,000 psi within 24 hours. NSF White Book registered.
Permatex High Performance Thread Sealant (PTX-56521) is a smooth, white paste-like compound with PTFE formulated for fast, responsive curing on metal pipe threads and fittings. The PTFE controls lubricity to assist assembly and torque tightening. Replaces tape and pipe dopes. Cures rapidly to withstand 10,000 psi within 24 hours. Prevents galling and protects mated threaded surfaces from rust and corrosion. The product cures when confined in the absence of air between close-fitting metal surfaces. Recommended for metal tapered pipe threads up to 2" NPT in industrial applications - chemical processing, petroleum refining, pulp/paper, waste treatment, textile, utilities/power generation, marine, automotive, industrial equipment, gas compression and distribution. Not recommended for use on plastic piping. NSF White Book registered.
Fast fixture time on metal pipe threads. Reacts faster and stronger with Active Metals; reaches 10,000 psi within 24 hours.
10,000 psi at 3/8 NPT after 24-hour cure at 75°F. Immediate low-pressure sealing also possible for fast turnaround.
PTFE controls torque/tension ratio during assembly. Prevents galling and protects threaded surfaces from rust and corrosion.
Recommended for metal tapered pipe threads up to 2" NPT (over 2" requires Surface Prep activator + 48 hr cure).
Operating range -65 to +300°F. Resistant to gasoline, oil, water, glycol, hydraulic fluid, and freon. NSF White Book registered.
Remove oil, water, contamination, and any old sealant from both male and female tapered threads. Degrease with cleaner if needed.
Leaving the first thread free, apply a continuous bead around the male threads. For larger fittings, apply a thin film to the female threads as well.
Tighten with standard wrenches to the proper torque. Curing begins immediately as air is excluded.
Low-pressure leak testing can be performed immediately after assembly. Allow ~24 hours for full strength before high-pressure operation.
Source: Permatex official TDS (High Performance Thread Sealant - 56521), "FOR CLEANUP" section.
Source: Permatex official Technical Data Sheet (Permatex High Performance Thread Sealant - 56521), "TYPICAL APPLICATIONS" section, verbatim. Recommended for sealing metal tapered pipe threads up to 2 inches NPT in industrial applications: chemical processing, petroleum refining, pulp/paper, waste treatment, textile, utilities/power generation, marine, automotive, industrial equipment, gas compression and distribution. Also recommended for industrial plant fluid power systems.
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