Permatex High Strength Threadlocker Red 36 ml — Permanent Anaerobic Adhesive, 3,000 PSI

Permatex 27140 High Strength Threadlocker Red is a high-torque anaerobic adhesive that permanently secures studs, bolts, and press-fit assemblies to resist vibration and heavy loads.

This 36 ml bottle delivers an industrial-strength threadlocker formulated for permanent locking of threaded and press-fit connections. Designed for applications where fasteners must not loosen under vibration, torque, or thermal cycling, this red formula cures anaerobically between metal surfaces and provides up to 3,000 PSI of shear strength on slip and press-fit assemblies. It’s commonly used in automotive, heavy equipment, and industrial maintenance where a long-term, tamper-resistant bond is required.

How does Permatex 27140 perform on high-stress automotive fasteners?

The high-strength red formula is engineered to lock studs and bolts subjected to heavy loads and repeated vibrations. Once cured, it resists loosening and provides a permanent lock that replaces mechanical retainers in many applications.

• Provides up to 3,000 PSI holding power on slip and press-fit assemblies.
• Recommended for cylinder block and rocker arm studs, ring gear bolts, and frame bolts.
• Effective on shock absorber bolts and other high-stress automotive fasteners.

Can I remove bolts treated with this threadlocker if I need to service the component?

Because this is a high-strength, permanent-grade product, removal usually requires heat or specialty tools. Technicians commonly apply localized heat to break the adhesive bond or use impact tools to extract fasteners safely.

• May require heat (e.g., torch) or extraction tools for removal.
• Not intended for fasteners that need routine disassembly.
• Plan service access or use a removable-grade threadlocker for future maintenance.

Where is this threadlocker best applied and what surfaces work most effectively?

The formula cures anaerobically between metal surfaces, so it’s ideal for steel, stainless steel, and other metal-to-metal joints. It performs best on properly prepped, oil-free threads or press-fit parts.

• Suggested applications: cylinder blocks, rocker arm studs, ring gear bolts, frame bolts, shock absorber bolts.
• Works on slip fits, press fits, and threaded fasteners where permanent locking is required.
• Ensure surfaces are clean, dry, and free of heavy oils or contaminants for optimal cure.

What safety and handling should I consider when using Permatex 27140?

Use in well-ventilated areas and avoid skin and eye contact. Keep away from temperatures and conditions that could create unwanted exposure during curing or removal.

• Wear gloves and eye protection when applying the adhesive.
• Store in a cool, dry place away from direct sunlight and ignition sources.
• Follow product label instructions for cure time and recommended application volumes.

Who is this for: Permatex 27140 High Strength Threadlocker Red is suited for mechanics, fleet maintenance teams, industrial technicians, and serious DIYers who need a durable, permanent lock on critical fasteners. Choose this product when you require maximum holding power and tamper resistance for parts that are seldom or never disassembled; if future removal is likely, consider a lower-strength threadlocker instead.