Loctite 263 – High Strength Threadlocker

Loctite 263 is a high-strength, permanent threadlocker designed for locking and sealing heavy-duty threaded fasteners. It provides exceptional resistance against vibration, shock, and thermal expansion, making it ideal for critical assemblies that must stay secure under extreme conditions. Its oil-tolerant formula allows reliable performance even on slightly contaminated or oily surfaces.

Key Features

• High Strength (Permanent) – Fasteners require heat & tools for removal

• Oil Tolerant – Performs well even on oily or contaminated threads

• Vibration & Shock Resistant – Prevents loosening under heavy load

• Corrosion Protection – Seals threads to stop rust and leakage

• Wide Temperature Range – Works from –55°C to +180°C

• Fast Curing – Fixture time approx. 10 minutes on steel

• Excellent for Large Fasteners – Bolts, nuts, and studs up to 1 inch

Best For

• Automotive engines & drivetrain components

• Heavy machinery & industrial equipment

• Gearboxes, motors & pumps

• Construction equipment

• Permanent locking of critical bolts and studs