Loctite 638 High Strength Retainer - Green - 10ml
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Product Information
Full details
This guide provides essential information for users of Loctite 638 High Strength Retainer. Designed for bonding cylindrical fitting parts, it excels in preventing loosening and leakage due to shock and vibration. While highly effective, it's crucial to ensure proper surface preparation for optimal performance. This guide covers key features, practical applications, and important setup and care instructions for this industrial-grade adhesive.
All features
| Colour | Green |
|---|---|
| Model Part Number | 1918981 |
| Brand | Loctite |
Extended Product Information
FAQs
What is Loctite 638 used for?
Loctite 638 is a high-strength retaining compound used for bonding cylindrical fitting parts, preventing loosening and leakage due to shock and vibration.
What metals can Loctite 638 bond?
Loctite 638 works on both active and passive metals, including steel, stainless steel, and aluminum.
Does Loctite 638 require air for curing?
No, Loctite 638 cures when confined in the absence of air between close-fitting metal surfaces.
What is the maximum gap fill for Loctite 638?
The maximum gap fill is 0.25mm.
Is Loctite 638 resistant to high temperatures?
Yes, Loctite 638 exhibits high-temperature resistance.
Are there any approvals for Loctite 638?
Yes, Loctite 638 has approvals from NSF, DVGW (EN 751-1), and WRAS (BS 6920).
How should I store Loctite 638?
Store Loctite 638 in a cool, dry place and keep the container tightly closed when not in use.
What should I do if Loctite 638 comes into contact with my skin?
Avoid contact with skin and eyes. Refer to the Material Safety Data Sheet (MSDS) for safety precautions.
Troubleshooting
Bond failure after assembly.
Ensure the surfaces were properly cleaned and prepared. Check the gap size to ensure it is within the product's specifications. Verify that the adhesive was allowed to cure for a sufficient amount of time and under the correct conditions.
Slow curing time.
Verify that the components are made of compatible materials. Confirm the gap size is within the product specifications and that the temperature is within the recommended range. In some cases, using a Loctite activator can accelerate the curing process.
Leakage after assembly.
Ensure that the parts are properly aligned during assembly. Verify the adhesive was applied evenly and that the gap size is within the product's specifications.
Pros and Cons
Pros
- High strength bonding for cylindrical parts.
- Effective in the presence of minor contaminants.
- Suitable for a wide range of metal types.
- Resistant to high temperatures.
- Prevents loosening and leakage from vibration and shock.
- Approved for use in potable water and gas applications.
Cons
- Requires the absence of air for curing.
- May require surface preparation for optimal bonding.
- Specific applications are limited by approvals.
Setup, Compatibility & Care
Setup
- Surface Preparation: Clean the surfaces to be bonded thoroughly with a suitable solvent to remove oil, grease, and dirt.
- Application: Apply Loctite 638 to the parts, ensuring complete coverage of the bonding surfaces.
- Assembly: Assemble the parts immediately after applying the adhesive.
- Curing: Allow the adhesive to cure completely, as per the manufacturer's recommendations. Curing time depends on the gap size and the metal type.
Compatibility
Loctite 638 is compatible with a wide range of metals, including steel, stainless steel, and aluminum. It is generally not recommended for use on plastics.
Care
- Store Loctite 638 in a cool, dry place.
- Keep the container tightly closed when not in use.
- Avoid contact with skin and eyes. Refer to the Material Safety Data Sheet (MSDS) for safety precautions.
- Dispose of the product and its container in accordance with local regulations.