Welcome Offer : Use Code WELCOME5 for 5% OFF!
Free Shipping on Most USA Orders
Welcome Offer : Use Code WELCOME5 for 5% OFF!
Free Shipping on Most USA Orders
Welcome Offer : Use Code WELCOME5 for 5% OFF!
Free Shipping on Most USA Orders
Welcome Offer : Use Code WELCOME5 for 5% OFF!
Free Shipping on Most USA Orders
Welcome Offer : Use Code WELCOME5 for 5% OFF!
Free Shipping on Most USA Orders
Welcome Offer : Use Code WELCOME5 for 5% OFF!
Free Shipping on Most USA Orders
Welcome Offer : Use Code WELCOME5 for 5% OFF!
Free Shipping on Most USA Orders
Welcome Offer : Use Code WELCOME5 for 5% OFF!
Free Shipping on Most USA Orders
Welcome Offer : Use Code WELCOME5 for 5% OFF!
Free Shipping on Most USA Orders
Welcome Offer : Use Code WELCOME5 for 5% OFF!
Free Shipping on Most USA Orders
⚠️ California Proposition 65 Warning : Some products sold on this website may expose you to chemicals known to the State of California to cause cancer, birth defects, or other reproductive harm.
For more information, visit www.P65Warnings.ca.gov.
LOCTITE 640 is a high-temperature anaerobic adhesive designed for securing slip and press fit assemblies. This powerful adhesive provides strong bonding capabilities, making it ideal for applications in automotive and industrial settings where reliability and durability are critical.
This adhesive is a methacrylate ester-based retaining compound that excels in high-pressure environments. It restores fit to worn or out-of-tolerance assemblies while preventing surface corrosion. With a maximum service temperature of 400°F (204°C) and a low viscosity, LOCTITE 640 is particularly effective for large diameter components and active metals such as brass. Its slow curing properties allow for extended positioning time, ensuring precise application. The fixturing time on steel is approximately 2 hours, providing ample time for adjustments.
Key Features:
OEM-Approved Performance: Trusted by leading auto manufacturers and professionals in engine building and repair worldwide.
Strong, Reliable Adhesion: Medium-temperature anaerobic adhesive ensures secure bonding for slip and press-fit assemblies.
Exceptional Strength: Increases holding power by up to 3,200 PSI, enhancing durability and resistance in high-pressure conditions.
Corrosion Protection: Shields surfaces from corrosion and restores fit to worn or out-of-tolerance assemblies, extending component life.
High Heat Resistance: Performs effectively in extreme conditions, withstanding temperatures up to 350°F.
Fluorescent Detection: The product’s fluorescence allows for easy monitoring of application presence during use.
Max. Diametrical Clearance: Suitable for gaps up to 0.1 mm, ensuring compatibility with various assembly requirements.
LOCTITE 640 is an excellent choice for professionals and DIY enthusiasts alike, particularly in automotive and industrial applications where high-strength adhesion and temperature resistance are necessary. Its unique formulation and performance characteristics make it a reliable solution for restoring and securing assemblies, ensuring long-lasting results in demanding environments.
Yes, we offer free standard shipping on all orders within the United States.
When will I receive my item?
Domestic orders typically arrive within 3-5 business days. Delivery times are estimated and may vary depending on your location, weather conditions, or other unforeseen factors.
Can I change or return my item?
We hope you love your purchase, but if you need to make a change or return your item, we’ve got you covered! You can initiate a return or exchange within 30 days of receiving your order. Please ensure the product is in its original condition and packaging. For more information on our return policy, please visit our Returns & Exchanges page.
Frequently Asked Questions
Q: What is the size of the LOCTITE 640 adhesive?A: The LOCTITE 640 adhesive comes in a six milliliter tube. This compact size is ideal for various applications in automotive and industrial settings.
Q: What materials can LOCTITE 640 be used on?A: LOCTITE 640 is suitable for active metals like brass. It effectively bonds slip and press-fit assemblies, ensuring durability.
Q: What is the operating temperature range for LOCTITE 640?A: LOCTITE 640 operates effectively between negative fifty-five degrees Celsius and one hundred seventy-five degrees Celsius. It withstands high temperatures up to four hundred degrees Fahrenheit.
Q: How do you apply LOCTITE 640 adhesive?A: To apply LOCTITE 640, clean the surfaces, then apply the adhesive to one part. Assemble the parts and allow it to cure for two hours on steel.
Q: Is LOCTITE 640 suitable for large diameter components?A: Yes, LOCTITE 640 is designed for large diameter components. Its low viscosity allows for easy application and effective bonding.
Q: Can LOCTITE 640 be used on worn components?A: Yes, LOCTITE 640 restores fit to worn or out-of-tolerance assemblies. It enhances the fit and extends the life of components.
Q: How do you store LOCTITE 640 adhesive?A: Store LOCTITE 640 in a cool, dry place, away from direct sunlight. Ensure the cap is tightly sealed to prevent drying out.
Q: Does LOCTITE 640 have a shelf life?A: Yes, LOCTITE 640 generally has a shelf life of around twelve months when stored properly. Check the packaging for specific expiration dates.
Q: Is LOCTITE 640 safe to use?A: LOCTITE 640 is safe for use when applied according to the manufacturer's instructions. Always use in well-ventilated areas and avoid skin contact.
Q: What if LOCTITE 640 arrives damaged?A: If LOCTITE 640 arrives damaged, contact the seller for a return or replacement. Keep all packaging materials for the return process.
Q: Can LOCTITE 640 be used in automotive applications?A: Yes, LOCTITE 640 is specifically designed for automotive applications. It is OEM-approved and trusted by professionals.
Q: How strong is the bond created by LOCTITE 640?A: LOCTITE 640 can provide holding power of up to three thousand psi. This ensures strong, reliable adhesion under high-pressure conditions.
Q: Is LOCTITE 640 resistant to corrosion?A: Yes, LOCTITE 640 offers corrosion protection. It shields surfaces from corrosion while restoring fit and functionality.
Q: What color is LOCTITE 640?A: LOCTITE 640 is a green anaerobic adhesive. Its color helps in visibility and monitoring during application.
Q: How long does LOCTITE 640 take to cure?A: LOCTITE 640 typically requires about two hours to cure on steel. Full strength is reached after a longer period.