Permatex High Strength Threadlocker Red 36 ml — Permanent Anaerobic Bond, 3,000 PSI Holding Power

Permatex 27140 High Strength Threadlocker Red is a permanent anaerobic adhesive that locks studs, bolts, and press-fit assemblies to resist vibration and deliver up to 3,000 PSI holding strength.

This 36 ml bottle of Permatex 27140 is formulated for heavy-duty fastening jobs where a long-lasting, high-strength bond is required. It cures anaerobically between metal surfaces to prevent loosening from shock and vibration, and it replaces mechanical locking devices like set screws, snap rings, and lock washers in many applications. Because it creates a permanent bond, removal usually needs heat or special tools, making it ideal for components intended to stay fixed during service life.

How strong is this threadlocker and where does it work best?

Permatex 27140 delivers high-strength locking power, rated around 3,000 PSI on slip and press-fit connections. It is designed for heavy-duty metal-to-metal joints and is commonly used in automotive, industrial, and equipment assembly applications.

• Provides up to approximately 3,000 PSI holding power on slip and press-fit assemblies
• Effective on studs, bolts, and press-fit parts made of steel and other metals
• Prevents loosening from vibration and shock in demanding environments

Can I use it to permanently lock studs and replace mechanical locks?

Yes — this product is intended to permanently secure studs, ring gear bolts, and similar fasteners, often eliminating the need for snap rings or set screws. Expect a robust, long-term bond; disassembly will typically require elevated heat or specialized removal tools.

• Well-suited for permanently locking studs and press-fit components
• Commonly replaces set screws, snap rings and lock washers
• May need heat or mechanical extraction for removal

What applications and parts are recommended for Permatex 27140?

This threadlocker is recommended for hard-to-loosen connections in engines, drivetrains, frames, and suspension components where a permanent hold is desirable. Use it on fasteners that are meant to remain fixed throughout normal service intervals.

• Cylinder block and rocker arm studs
• Ring gear bolts and other drivetrain fasteners
• Frame bolts and shock absorber fasteners

How do I apply it correctly for reliable results?

Surface prep and proper application improve cure speed and strength: clean oil, dirt, and corrosion from mating surfaces, apply sparingly to the fastener, and assemble while the adhesive is liquid. Allow full cure time per ambient temperature and material; avoid using on porous or plastic components not specified for anaerobic adhesives.

• Clean parts of oil, dirt, and rust before application
• Apply a small amount to threads or press-fit surface, then assemble
• Allow adequate cure time; removal may require heat or special tools

Who is this for: Permatex 27140 High Strength Threadlocker Red is aimed at automotive technicians, machinists, maintenance pros, and serious DIYers who need a permanent, vibration-resistant lock for metal fasteners and press fits. If you require a reliable, high-strength bond for studs, ring gear bolts, frame or suspension fasteners and accept that disassembly will be difficult without heat or special tools, this product fits those needs. For removable or frequently serviced connections, consider a medium-strength threadlocker instead.