Best Retaining Compounds of 2025

Brian Howie Avatar
Brian Howie
Last Updated: Jan 8, 2025

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Retaining compounds are highly effective adhesives used for bonding cylindrical parts such as bearings, gears, and shafts. They are designed to fill gaps between mating surfaces, creating a strong and durable bond that can withstand high loads and vibrations. Retaining compounds are ideal for applications where traditional mechanical fasteners are not suitable or would require complicated machining. They also provide excellent resistance to chemicals, temperature fluctuations, and moisture, making them a reliable choice for various industries such as automotive, aerospace, and manufacturing.

At a Glance: Our Top Picks

Loctite 620 50ml Retaining Compound Cover #TOP 1
Loctite 620 50ml Retaining Compound
ftb score rating icon 9.9
Loctite 21448 Green 638 High Strength Retaining Compound Cover #TOP 2
Loctite 21448 Green 638 High Strength Retaining Compound
ftb score rating icon 9.8
Loctite 609 Retaining Compound Cover #TOP 3
Loctite 609 Retaining Compound
ftb score rating icon 9.6

Top 10 Retaining Compounds

#TOP 1

Loctite 620 50ml Retaining Compound

135514
Green
Loctite 620 50ml Retaining Compound Cover
Loctite 620 442-62040 50ml Retaining Compound, High Temperature, Green Color

Loctite 620 50ml Retaining Compound is a high viscosity liquid designed to lock and secure metal cylindrical assemblies up to 0.015" diameter clearance. It prevents metal fretting and corrosion, while also sealing against leakage.

What We Like
Effective at securing metal cylindrical assemblies
Prevents metal fretting and corrosion
High viscosity liquid for improved retention
#TOP 2

Loctite 21448 Green 638 High Strength Retaining Compound

21448
Green
Loctite 21448 Green 638 High Strength Retaining Compound Cover
Loctite 21448 Green 638 High Strength Retaining Compound, 50 mL Bottle

This retaining compound is approved by the Canadian Food Inspection Agency (CFIA) and comes in a 50 mL bottle. Its dimensions are 5.99999999388" in length, 1.99999999796" in width, and 1.099999998878" in height. It falls under the category of retaining compounds.

What We Like
Approved by the Canadian Food Inspection Agency (CFIA)
Comes in a convenient 50 mL bottle
Small and compact size with dimensions of 5.99999999388" in length, 1.99999999796" in width, and 1.099999998878" in height
#TOP 3

Loctite 609 Retaining Compound

848744
Green
Loctite 609 Retaining Compound Cover
Genuine Henke Loctite 609 X 50ml Retaining Compound, General Purpose, Green Color

Loctite Green Compound is a liquid acrylic material that securely holds metal parts in place. The green color makes it easy to apply. It is a general-purpose compound suitable for various applications. This 50ml bottle is convenient for your needs.

What We Like
Securely holds metal parts
Easy to apply
Durable acrylic material
#TOP 4

Loctite 648 Retaining Compound

1835920
green
Loctite 648 Retaining Compound Cover
648 Retaining Compound 50 mL Bottle, Green

Loctite 648 is a high-quality retaining compound designed for the secure retention of parts with a clearance or interference fit. With its high temperature resistance, it can withstand extreme heat without compromising its strength. The compound has also been proven to be tolerant of minor contamination caused by industrial oils, ensuring reliable performance even in challenging environments. Loctite 648 provides exceptional strength on all metals, including passive substrates like stainless steel, making it a versatile solution for various applications. Its ability to maintain a strong bond on different surfaces makes it ideal for use in automotive, industrial, and mechanical settings. Whether you need to secure bearings, bushings, or cylindrical parts, Loctite 648 is the reliable choice that offers convenience and peace of mind.

What We Like
High temperature resistance
Proven tolerance to industrial oil contamination
High strength on all metals
#TOP 5

Vibra-TITE 538 High Strength Anaerobic Retaining Compound

Green
50 milliliters
Vibra-TITE 538 High Strength Anaerobic Retaining Compound Cover
Vibra-TITE - 53850 538 High Strength Anaerobic Retaining Compound, 50 ml Bottle, Green

Vibra-TITE Retaining Compound is a high-strength anaerobic adhesive that enhances the shear strength of non-threaded cylindrical metal assemblies. It also fills gaps between closely fitted metal parts to create a solid, leak-proof joint. By sealing joints and preventing corrosion, this compound ensures durable and long-lasting metal assemblies. The convenience of a one-piece assembly saves you time and effort while providing a reliable solution for securing metal parts effectively.

What We Like
Increases shear strength
Fills voids for solid assembly
Prevents corrosion
#TOP 6

Vibra-TITE 567 Green High Temperature Retaining Compound

Green
10 mililiters
Vibra-TITE 567 Green High Temperature Retaining Compound Cover
Vibra-TITE 567 Green High Temperature Retaining Compound, 10ml Bottle

Vibra-TITE 567 Retaining Compound is a high temperature adhesive that offers a range of benefits for your metal assemblies. With its strong shear strength, it increases the stability and durability of non-threaded cylindrical metal assemblies. By filling voids between close-fitting metal parts, it creates a solid one-piece assembly, reducing the risk of parts coming loose or shifting. Additionally, this compound acts as a sealant, preventing leakage in joints, and provides protection against corrosion. Whether you're working on automotive repairs, industrial machinery, or any other metal assembly project, Vibra-TITE 567 Retaining Compound ensures a secure and long-lasting bond.

What We Like
Increases shear strength
Fills voids
Creates solid assembly
#TOP 7

LOCTITE 660 Press Fit Repair: High-Strength Retaining Compound

555337
Clear
LOCTITE 660 Press Fit Repair: High-Strength Retaining Compound Cover
LOCTITE 660 Press Fit Repair for Worn Parts: High-Strength, Quick Cure, Quick Metal Retaining Compound, Prevents Loosening and Leakage | 50 ml Tube (PN: 555337)

LOCTITE 660 Press Fit Repair is an OEM-specified and lab tested high-strength retaining compound that prevents loosening and leakage from shock and vibration. It is designed for bonding cylindrical fitting parts, such as worn shafts, housings, coupling, and repairing worn keyways, loose set screws, and other severely worn parts. The bond gaps can approach 0.50 mm (0.02 in.), and the product cures when confined in the absence of air between close-fitting metal surfaces.

What We Like
Trusted by professionals and OEM-specified
Prevents loosening and leakage from shock and vibration
Great for refitting worn parts
#TOP 8

Loctite 1835201 Green 680 Retaining Compound

1835201
Green
50 ML
Loctite 1835201 Green 680 Retaining Compound Cover
Loctite 1835201 Green 680 Retaining Compound, 50 mL Bottle

The Loctite 1835201 Green 680 Retaining Compound is a high viscosity adhesive that offers high strength and room temperature curing. It is ideal for joining fitted cylindrical parts and replacing clamp rings, set screws, and snap rings. It allows for relaxed machining tolerances and is recommended for retaining shafts, gears, pulleys, and similar cylindrical parts.

What We Like
High strength adhesive
Room temperature curing
Allows relaxed machining tolerances
#TOP 9

ESKONKE Green 620 Retaining Compound

Green
ESKONKE Green 620 Retaining Compound Cover
ESKONKE Retaining Compound Green 620 Sleeve Retainer High Strength Cylindrical Metal Components Assemblies Locking and Sealing Anaerobic Glue 1.69 Oz/50 ml

The ESKONKE Green 620 Glue is an excellent choice for assembling smooth, unthreaded cylindrical metal parts. It helps fill gaps and reduces the need for precise design and installation, making your projects easier. By preventing loosening and protecting against wear and corrosion, you can ensure your equipment operates reliably. This high-strength adhesive distributes loads evenly, which enhances the stability of your components. Plus, it seals out oxygen and contaminants, extending the life of your machinery. With its easy application and quick curing time, you’ll find it convenient for various metal assemblies.

What We Like
High shear strength
Prevents wear and corrosion
Easy application
Seals against contaminants
#TOP 10

Vibra-TITE 541 High Strength Slip Fit Anaerobic Retaining Compound

Green
10 mililiters
Vibra-TITE 541 High Strength Slip Fit Anaerobic Retaining Compound Cover
Vibra-TITE - 54110 541 High Strength Slip Fit Anaerobic Retaining Compound, 10ml Bottle, Green

This Vibra-TITE 54110 541 High Strength Slip Fit Anaerobic Retaining Compound is perfect for non-threaded cylindrical metal assemblies as it increases shear strength while filling voids between close-fitting metal parts. It creates a solid one-piece assembly, seals joints against leakage, and prevents corrosion, making it a reliable adhesive for metal parts. Additionally, it falls under the Contact Cements category.

What We Like
Increases shear strength on non-threaded cylindrical metal assemblies
Fills voids between close-fitting metal parts
Creates a solid one-piece assembly
Buying Guide Image

Ready for the Course: How to Buy the Right Retaining Compounds

Introduction

Retaining compounds are essential tools in any workshop or construction site. They are used to hold parts together, preventing them from vibrating loose or separating under load. Choosing the right retaining compound can be tricky, as there are many different types available on the market. In this article, we will discuss some key factors to consider when choosing a retaining compound, as well as some tips for using them effectively.

Factors to Consider

  1. The type of parts being held together. Different retaining compounds are designed for different applications. Some are better suited for holding metallic parts together, while others are better for non-metallic parts. Be sure to choose a retaining compound that is compatible with the materials you are working with.

  2. The operating environment. Retaining compounds are typically designed to withstand a range of temperatures and other environmental conditions. If you are working in a particularly hot or cold environment, or if your parts will be exposed to moisture or chemicals, be sure to choose a retaining compound that can handle these conditions.

  3. The level of strength and durability required. Not all retaining compounds are created equal. Some offer stronger bonds than others, and some are more resistant to vibration and other stresses. Be sure to choose a retaining compound that provides the level of strength and durability you need for your specific application.

  4. The ease of use. Some retaining compounds are easier to apply than others. If you are a beginner or if you are working in a tight space, you may want to choose a retaining compound that is easy to apply and that does not require any special tools or equipment.

Tips for Using Retaining Compounds

  1. Follow the manufacturer's instructions. Retaining compounds are typically supplied with detailed instructions on how to use them. Be sure to follow these instructions carefully to ensure that you get the best results.

  2. Clean the parts before applying the retaining compound. Any dirt, grease, or other contaminants on the parts can interfere with the bond. Be sure to clean the parts thoroughly before applying the retaining compound.

  3. Use the right amount of retaining compound. Too little retaining compound will not provide a strong enough bond, while too much can create a messy, difficult-to-clean situation. Be sure to apply the retaining compound according to the manufacturer's instructions.

  4. Allow the retaining compound to cure properly. Most retaining compounds require time to cure and reach their full strength. Be sure to allow the retaining compound to cure according to the manufacturer's instructions before putting the parts into service.

Conclusion

In conclusion, choosing the right retaining compound is an important step in any project that requires parts to be held together. By considering the type of parts, the operating environment, the required strength and durability, and the ease of use, you can choose a retaining compound that is well-suited to your specific needs. And by following the tips for using retaining compounds outlined in this article, you can ensure that your parts stay securely in place for the long term.

Frequently Asked Questions (FAQs)

1. What is a retaining compound used for?

Retaining compounds are used to bond components together, such as bearings, cylinder liners, and shafts. They provide increased strength and resistance to high temperatures. In contrast, thread lockers are used to prevent loosening, leakage, and corrosion in threaded fasteners.

2. What is the difference between Threadlocker and retaining compound?

Retaining compounds are designed for bonding components together and provide higher strength. Threadlockers, on the other hand, are designed to prevent loosening, leakage, and corrosion in threaded fasteners.

3. What is Loctite retaining compound used for?

Loctite retaining compounds are used to securely hold bearings, bushes, and cylindrical parts into housings or onto shafts. They offer an effective and cost-efficient method for assembly.

4. How long does Loctite retaining compound take to set?

Most Loctite threadlockers and retaining compounds will set in 10-20 minutes. However, it takes 24 hours for them to fully cure and harden into a plastic-like material.

5. Is retaining compound better than grease?

Retaining compounds and grease serve different purposes. While grease can be used as an assembly aid, retaining compounds are better suited for applications where movement needs to be stopped, such as silencing creaking between static components.

6. Can I use thread locker as retaining compound?

Yes, thread lockers can be used as retaining compounds. Both thread lockers and retaining compounds are anaerobics, meaning they cure in the absence of air. However, it's important to note that using a retaining compound for locking threaded assemblies would make the locking permanent.

Editor's Notes

During our retaining compound research, we found 24 retaining compound products and shortlisted 10 quality products. We collected and analyzed 13,206 customer reviews through our big data system to write the retaining compounds list. We found that most customers choose retaining compounds with an average price of $19.47.

The retaining compounds are available for purchase. We have researched hundreds of brands and picked the top brands of retaining compounds, including Loctite, Vibra-TITE, ESKONKE. The seller of top 1 product has received honest feedback from 75 consumers with an average rating of 4.8.

Written by
Brian Howie Avatar

Brian Howie is a content writer and senior industrial designer. After graduation from Westminster College, he has been engaged in product design and manufacturing for 18 years. Brian Howie has always found great pleasure in designing industrial products and sharing his ideas and experience online.