Loctıte 640, Green High Strength, Retaining Compound Methacrylate Liquid Bottle 50 ml, -55 → +175 °C

Enrgtech Part No: ET17548389
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Manufacturer Part No:
640
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Manufacturer: Loctite

640 Loctıte , Green High Strength, Retaining Compound Methacrylate Liquid Bottle 50 ml, -55 → +175 °C

Product Information

Trade Name:

640

Cure Time:

24 h

Operating Temperature Range:

-55 → +175 °C

Product Form:

Liquid

Colour:

Green

Chemical Ingredients:

Methacrylate

Application:

Bonding

Chemical Composition:

Methacrylate

Strength:

High

Package Type:

Bottle

Minimum Operating Temperature:

-55°C

Package Size:

50 ml

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The Loctite 640 is a green, one‑part methacrylate ester‑based retaining compound designed for securing cylindrical components in industrial assemblies. With its low viscosity and high strength, it is ideal for large‑diameter or active‑metal parts that require extended positioning time. The product cures anaerobically when confined between close‑fitting metal surfaces and is rated for service temperatures from –55 °C to +175 °C when fully cured.

Standout Features and Benefits of Buying the Loctıte Green Retaining Compound Methacrylate Liquid Bottle

Low‑viscosity liquid allows excellent penetration into fine gaps.
High shear strength (~22 N/mm²) on steel substrates.
Diametrical clearance acceptance up to 0.1 mm for slip‑fitted assemblies.
Slow cure time (~2 hours on steel) supports accurate part alignment.
Wide service‑temperature range (–55 °C to +175 °C) in cured state.

Engineered for Retaining Assembly Integrity

The 640 is engineered to enhance mechanical retention, eliminate backlash in worn assemblies, and prevent fretting or spin‑out of bearings, bushings, sleeves, keys, and splines. The anaerobic curing mechanism activates in the absence of air within confined metal interfaces, providing reliable bonding without mixing or complex preprocessing. Slow‑cure enables longer positioning times for large or complex assemblies, and the product’s green fluorescence under UV allows visual inspection of coverage.

Typical Industrial Applications

Retaining bearings or sleeves in housings and on shafts in automation machines.
Securing large‑diameter pins, bolts or shafts in gearboxes or heavy machinery.
Eliminating backlash and spin‑out in rotor‑to‑shaft assemblies in fractional‑hp motors.
Restoring fit in worn or out-of-tolerance assemblies.
Retaining keys and splines in base metals or active metals such as brass.

Loctite 640 (EN - SDS)(Technical Reference)

Loctite 640(Technical Reference)

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FAQs

Yes. We ship 640 Internationally to many countries around the world.

Yes. You can also search 640 on website for other similar products.

We accept all major payment methods for all products including ET17548389. Please check your shopping cart at the time of order.

We use our internationally recognized delivery partners UPS/DHL. Collection of ET17548389 can also be arranged for the customer by international shipments through contacting our customer support team. Additionally, you can also search"Loctite" products on our website by using Enrgtech's Unique Manufacturing Part Number ET17548389.

You can order Loctite brand products with 640 directly through our website or call us at +44 (0) 3303 800 157 or email our support team at sales@enrgtech.co.uk.

Yes. Our products in Retaining Compounds category are shipped in lowest possible time.

You will get a confirmation email regarding your order of Loctıte 640, Green High Strength, Retaining Compound Methacrylate Liquid Bottle 50 ml, -55 → +175 °C. You can also check on our website or by contacting our customer support team for further order details on Loctıte 640, Green High Strength, Retaining Compound Methacrylate Liquid Bottle 50 ml, -55 → +175 °C.