Permanently secure heavy-duty threaded fasteners with Permatex Threadlocker Red High Strength. Designed for automotive repair, shop use, equipment maintenance, and high-strength assemblies, this anaerobic threadlocker locks and seals fasteners to help prevent loosening from vibration, shock, and movement. The red high-strength formula is especially well-suited for studs, press fits, and larger fasteners from 3/8 in. to 1 in., and may require heat or special tools for removal.

• High-Strength Threadlocker – Permanently locks and seals heavy-duty threaded fasteners
• Vibration Resistance – Helps prevent loosening caused by vibration, shock, and movement
• Heavy-Duty Fastener Use – Ideal for fasteners from 3/8 in. to 1 in. or 9.5 mm to 25 mm
• Press Fit & Stud Support – Especially well-suited for permanently locking studs and press-fit assemblies
• Added Holding Power – Adds up to 3,000 PSI holding power on slip and press-fit assemblies
• Thread Corrosion Protection – Helps seal threads to protect against rust and corrosion
• Service Note – May require heat or special tools for removal due to the high-strength bond
• Versatile Application Use – Ideal for cylinder block studs, rocker arm studs, ring gear bolts, frame bolts, and shock absorber bolts