J-B Weld Perma-Lock™ Red High Strength Threadlocker

J-B Weld Perma-Lock™ Red High Strength Threadlocker is a heavy-duty thread locking and sealing compound designed to secure threaded fasteners exposed to severe shock and vibration. Its high-strength formulation provides a powerful, long-lasting hold for bolts, screws and other threaded components where unwanted loosening could cause mechanical problems.

Designed for demanding automotive, mechanical, machinery, workshop and industrial-style applications, Perma-Lock™ Red is suitable for compatible threaded fasteners ranging from 1/4 inch to 1 inch.

Unlike medium-strength removable threadlockers, J-B Weld Perma-Lock™ Red is intended for high-strength applications where the fastener is not expected to require regular disassembly. Once cured, heat and hand tools are required to separate the secured parts, making it particularly suitable for heavy-duty and vibration-sensitive assemblies.

Perma-Lock™ Red helps lock and seal threaded fasteners to prevent loosening caused by repeated shock, vibration and mechanical movement. Typical applications include rocker arms, stud bolts, frame bolts, fasteners, bushings, loose screws and other vibration-sensitive components.

With temperature resistance up to 148°C (300°F), it provides dependable performance across a wide range of automotive and mechanical operating conditions.

J-B Weld Perma-Lock™ Red is also OEM approved, making it suitable for applications where a dependable high-strength thread locking compound is required to keep bolts and fasteners securely in place.

For anyone searching for a red threadlocker, high-strength thread lock, heavy-duty bolt locking compound or vibration-resistant fastener adhesive, J-B Weld Perma-Lock™ Red provides a strong solution for demanding mechanical assemblies.

Key Benefits

• High-strength red threadlocker

• Designed for heavy-duty applications

• Locks and seals threaded fasteners

• Helps prevent bolts and screws from loosening

• Excellent resistance to severe shock

• Helps prevent vibration-related loosening

• Ideal for vibration-sensitive components

• Designed for long-lasting fastener security

• Heat and hand tools required for disassembly

• Suitable for 1/4in to 1in fasteners

• Temperature resistant up to 148°C / 300°F

• Ideal for automotive applications

• Suitable for mechanical assemblies

• Useful for body assemblies

• Ideal for rocker arms

• Suitable for stud bolts

• Useful for frame bolts

• Suitable for bushings

• Helps secure loose screws

• Ideal for machinery and workshop applications

• OEM approved

How to Use

• Ensure the threaded fastener and mating threads are clean and suitably prepared before application.

• Remove oil, grease, dirt and other contaminants that could interfere with the threadlocker's performance.

• Apply J-B Weld Perma-Lock™ Red to the threaded section of the bolt or fastener according to the manufacturer's instructions.

• Ensure the product covers the threads that will engage with the mating component.

• Assemble the components and tighten the fastener to the required specification.

• Allow the threadlocker to cure fully according to the manufacturer's instructions before subjecting the assembly to normal operating loads, shock or vibration.

• Always follow the equipment or vehicle manufacturer's specified tightening and torque requirements.

• Perma-Lock™ Red is a high-strength threadlocker. Where later disassembly is necessary, heat and appropriate hand tools are required.

• Always follow the manufacturer's application, removal and safety instructions.

Typical Applications

• Rocker arms

• Stud bolts

• Frame bolts

• Threaded fasteners

• Bushings

• Loose screws

• Vibration-sensitive components

• Heavy-duty fasteners

• Automotive assemblies

• Mechanical components

• Body assemblies

• Machinery

• Workshop equipment

• High-vibration applications

• Fasteners not requiring regular removal

Product Information

Brand: J-B Weld
Product: Perma-Lock™ Red Threadlocker
Strength: High Strength
Colour: Red
Type: Heavy-duty thread locking & sealing compound
Suitable Fastener Size: 1/4in to 1in
Maximum Temperature Resistance: 148°C / 300°F
Shock Resistant: Yes
Vibration Resistant: Yes
Removal: Heat and hand tools required
OEM Approved: Yes
Suitable Applications: Automotive, mechanical, machinery & heavy-duty threaded fasteners
Primary Use: High-strength locking and sealing of threaded fasteners

Data Sheets:
Data Sheet
Data Sheet
Data Sheet

WEEE Recycling Producer Registration Number:12889

How do I return my old product to be recycled?

You can return your old product to MyDIY. Waste Electrical and Electronic Equipment (WEEE) is taken back free of charge on a one-for-one, like-for-like basis. Waste batteries including rechargeable batteries are taken back free of charge. You are not obliged to make any purchase when returning old batteries. Each local authority must also accept household WEEE and small batteries free of charge at its recycling facilities. All WEEE and waste batteries must be recycled and should not be placed in any of your household wheelie bins. Make sure you always recycle all your old electrical goods and batteries.

What products can I recycle for free?

You can return anything that is electricaly powered or battery powered. Even your old bicycle lamps can be recycled!.

Do you take back used batteries?

Yes we do. The batteries that we accept are AA, AAA, C or D, powertool batterys and also the flat batteries that are found in watches and toys. Unfortunately we do not accept back any Industrial or car batteries.

Do I need to have made a purchase at MyDIY.ie?

No you don't. You can recycle any of the above items at our store in Inchicore Dublin 8, even if you have not made a purchase with us.

Will you collect my old product?

Yes, but we must be notafied within 14 days of purchase date. You can still arrange to have your old appliance recycled free of charge. Simply bring it back to our Inchicore store and we will ensure that it is disposed of in an environmentally friendly manner.

How much will it cost?

There is no charge to return products to any of our warehouses.

Why should I recycle with MyDIY?

We will ensure that your old product is disposed of correctly to reduce the potentially harmful effects caused on the environment and to conserve natural resources. Further information can be found on weeeireland.ie.

EMC (Environmental Management Cost) Included in the purchase price. 

Gas discharge lamps, LFLs and CFLs €0.15

LED lamps and luminaires €0.05

Large appliances €5.00

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