Description
Product Details
Loctite 638 High Strength Retaining Compound
Loctite 638 is a high strength retaining compound designed for the bonding of cylindrical parts where the bond gaps can approach 0.25 mm. The compound is used to fill the inner space between components and close-fitting metal surfaces. Loctite 638 cures in the absence of air to form a strong precision assembly and prevents loosening and leakage caused by shock and vibration.
What is a Retaining Compound?
A retaining compound is an anaerobic adhesive that can secure bearings, bushes and cylindrical parts into housings or onto shafts. The compound is applied as a liquid and is used to fill in the inner spaces of components forming a 100% contact between mating metal surfaces. Once cured the retaining compound forms a strong precision assembly
What Are The Benefits of a Retaining Compound?
A retaining compound helps to achieve maximum load transmission capability and uniform stress distribution. Micro movements between parts are eliminated to prevent component damage and fretting corrosion which reduces the need to purchase costly replacement parts
Features and Benefits of Loctite 638
Robust curing performance
Works on active metals such as mild steel
Works on passive substrates such as stainless steel and plated surfaces
High temperature performance
Tolerates minor surface contaminations from oils including cutting, lubrication, anti-corrosion and protection fluids
Works on active metals such as mild steel
Works on passive substrates such as stainless steel and plated surfaces
High temperature performance
Tolerates minor surface contaminations from oils including cutting, lubrication, anti-corrosion and protection fluids
Single component, quick and easy to apply
Ideal for shafts, gears, pulleys and similar cylindrical parts
DVGW Approval (EN 751-1): NG-5146AR0619
WRAS Approval (BS 6920): 0511518
Applications
Loctite 638 retaining compound offers a high resistance to dynamic, axial and radial loads. This feature makes Loctite 638 ideal for bonding cylindrical fitting parts, shafts, gears, pulleys and locking bushing and sleeves into housings and onto shafts.
Note
Testing should be carried out prior to contact with styrene, acrylic and polycarbonate based plastics to ensure compatibility.
Threadlocking and Retainers
Specifications
| Trade Name | 638 |
|---|---|
| Application | Bonding |
| Anaerobic | Yes |
| Colour | Green |
| Chemical Ingredients | 2-Hydroxyethyl Methacrylate, Acrylic Acid, Cumene Hydroperoxide, Dimethacrylate Ester, Hydroxyalkyl Methacrylate, Methacrylate Monomer, Methacrylic Acid, Polyglycol Dimethacrylate, Polyurethane Methacrylate Resin |
| Product Form | Liquid |
| Package Type | Bottle |
| Package Size | 10 ml |
| Cure Time | Up to 72h depending on the substrate used, the bondline gap, and the temperature. |
| Strength | High |
| Maximum Operating Temperature | +150°C |
| Minimum Operating Temperature | -55°C |
| Chemical Composition | 2-Hydroxyethyl Methacrylate, Acrylic Acid, Cumene Hydroperoxide, Dimethacrylate Ester, Hydroxyalkyl Methacrylate, Methacrylate Monomer, Methacrylic Acid, Polyglycol Dimethacrylate, Polyurethane Methacrylate Resin |
| Operating Temperature Range | -55 → +150 °C |
tyler_xo –
Perfect for what I needed. 100% recommended. Works just as advertised.
tyler_xo –
Excellent material.
beatrice88 –
I was skeptical, but now I’ll order regularly.
sarah_paris –
Packaging was slightly damaged, but the product is excellent.
grace.lily –
Pleasant to use at home. No unpleasant smell; I really like that. Very effective; I noticed a change in just one week.
Annika –
Perfect for my needs; I couldn’t be happier. I noticed a difference after a short time!
Hunter S. –
Good quality at a fair price. Met my expectations.
Anna Y. –
Great product, worth every cent. Not too big, not too small, just perfect. Packaging was slightly damaged, but product is excellent. Perfect for my needs; I couldn’t be happier.
Beatrice U. –
Perfect for my needs, couldn’t be happier. Pleasant to use at home. The quality pleasantly surprised me. Very satisfied, better than I expected.
emily_rose –
Easy to use, without making a mess. I noticed a difference after a short time! Pleasant to use at home. Very satisfied, better than expected.
Patrizia –
A friend recommended it and I’m so glad I ordered.
william_s –
Very functional. Excellent quality. Works just as advertised.
Ilaria –
A friend recommended it and I’m so glad I ordered. Very satisfied, better than I expected. A friend recommended it; I’m very happy with the purchase. Surprisingly good quality for the price.