Loctite 277 Vs 271 – Which Loctite Is The Long-lasting?

Loctite 277 and 271 are both high-strength threadlockers, but Loctite 277 is designed for larger bolts and screws with a diameter of over 0.5 inches, while Loctite 271 is better suited for smaller fasteners. Both products provide reliable and long-lasting bonding, preventing loosening and leakage.

Loctite 277 offers a higher temperature resistance, up to 350°F, compared to Loctite 271 which can withstand temperatures up to 300°F.

Choosing between these two options depends on the size of the fastener and the temperature requirements of the application. Ultimately, proper product selection is crucial for securing fasteners effectively.

Loctite 277 Vs Loctite 271

Loctite 277 Vs 271

Loctite 277

When it comes to choosing the right adhesive for your industrial or manufacturing needs, Loctite is a trusted brand known for its high-quality products.

One of their popular products, Loctite 277, is a high-strength adhesive that offers a reliable solution for various applications.

In this section, we will explore the features, applications, and advantages of Loctite 277, comparing it to its counterpart, Loctite 271.

Features Of Loctite 277

Loctite 277 is a medium-strength adhesive with anaerobic properties, making it suitable for applications where fasteners need to be secured in a short amount of time.

Its formula allows it to fill the gaps between mating threads, providing a strong and reliable bond that resists vibration and impact.

Applications Of Loctite 277

Due to its medium-strength properties, Loctite 277 is commonly used in applications where a secure but removable bond is required.

This can include assemblies such as gearbox housings, bearing caps, and oil seal carriers. Its ability to withstand high temperatures and harsh environmental conditions makes it a versatile choice for various industrial settings.

Advantages Of Loctite 277

The key advantage of Loctite 277 lies in its ability to provide a strong bond while still allowing for disassembly when needed.

It prevents corrosion and leakage, ensuring the integrity of the assembled parts.

Additionally, its anaerobic curing properties mean that it only solidifies in the absence of air, allowing for precise application and minimal waste.

See also  JB Weld Marine Vs Original - Application Areas, Cost Comparison
Loctite 277 Vs 271


Loctite 271

Loctite 271 is a high-strength threadlocker adhesive that provides a strong and reliable bond for a wide range of applications.

This adhesive is designed to secure and seal metal fasteners, preventing loosening and leakage due to vibration, thermal expansion, or chemical exposure.

Features Of Loctite 271

  • High-strength formula
  • Provides excellent resistance to heat and harsh environments
  • Prevents loosening from shock and vibration
  • Fast fixture time for efficient assembly
  • Ideal for use on rigid metal parts

Applications Of Loctite 271

  • Securing bolts, studs, and other fasteners in machinery and equipment
  • Sealing metal threads to prevent leaks in hydraulic and pneumatic systems
  • Locking and sealing nuts and bolts in automotive and motorcycle assembly
  • Industrial maintenance and repair applications
  • Use in heavy-duty construction equipment and mining machinery

Advantages Of Loctite 271

  • Ensures a secure and durable bond in demanding industrial environments
  • Provides consistent performance in extreme temperatures and chemical exposure
  • Reduces the risk of equipment failure and downtime due to loosening fasteners
  • Creates a reliable seal to prevent leaks and contamination
  • Improves the overall safety and reliability of assembled components

Performance Comparison

Strength And Durability Comparison

Loctite 277: Offers exceptional strength and durability for heavy-duty applications.

Loctite 271: Provides reliable strength and durability for general-purpose use.

Temperature Resistance Comparison

Loctite 277: Impressive temperature resistance up to 180°C, ideal for high-temperature environments.

Loctite 271: Good temperature tolerance up to 150°C, suitable for moderate heat conditions.

Chemical Resistance Comparison

Loctite 277: Exhibits excellent chemical resistance, ensuring long-lasting performance in harsh chemical environments.

Loctite 271: Offers good chemical resistance, suitable for general chemical exposure.

Suitable Applications

When it comes to adhesive solutions, Loctite 277 and Loctite 271 are two popular choices on the market. These high-performance anaerobic adhesives offer exceptional bonding strength and durability.

However, each product is designed for specific applications. Understanding the types of applications where Loctite 277 or Loctite 271 excel can help you make an informed decision. Let’s take a closer look:

Types Of Applications For Loctite 277

Loctite 277 is a versatile adhesive that is particularly suited for a variety of industrial applications. Its high viscosity formula provides excellent gap-filling capability, making it ideal for situations where there are small gaps or uneven surfaces.

Here are some specific scenarios where Loctite 277 shines:

  • Tightening and sealing screws, bolts, and studs
  • Securing bearings, bushings, and cylindrical parts
  • Bonding gears, pulleys, and other rotating parts
  • Fixing leaks in hydraulic and pneumatic systems
  • Sealing electrical connectors to prevent moisture ingress

In these applications, Loctite 277 not only provides strong adhesion but also adds structural benefits by preventing loosening, corrosion, and leakage.

Its ability to withstand extreme temperatures and resist chemicals further enhances its suitability in demanding environments.

See also  Loctite 242 Vs 243 - Is Loctite 242 The Same As 243?

Types Of Applications For Loctite 271

Loctite 271, on the other hand, is specifically formulated for applications that require maximum strength and fast curing times.

Its medium viscosity allows for easy application and prevents excessive adhesive flow. Let’s explore the specific scenarios where Loctite 271 is highly effective:

  • Locking and sealing nuts, bolts, and other threaded fasteners
  • Securing cylindrical assemblies and press fits
  • Bonding metal surfaces where high strength is required
  • Repairing metal components or reattaching loose parts

With its exceptional bond strength and fast cure time, Loctite 271 is well-suited for applications where reliability and durability are paramount.

Whether it’s keeping machinery running smoothly or reinforcing critical connections, Loctite 271 delivers remarkable performance. In summary, both Loctite 277 and Loctite 271 offer exceptional adhesive properties, but their suitable applications differ.

Loctite 277 excels in situations that require gap-filling and sealing properties, making it ideal for various industrial applications.

In contrast, Loctite 271 is specifically formulated for maximum strength and rapid curing, making it the go-to choice for securing threaded fasteners and bonding metal surfaces.

By understanding the specific scenarios where each adhesive performs best, you can confidently choose the right Loctite product for your application.

User Experience

When it comes to user experience, the feedback from customers is crucial in understanding the performance of Loctite 277 and Loctite 271.

Let’s dive into what customers have to say about these two products and explore some case studies that highlight their impressive performance.

Customer Feedback On Loctite 277

Customers who have used Loctite 277 have praised its exceptional adhesive capabilities. Many users have reported that this product provides a strong and durable bond, even in challenging conditions.

The quick-drying formula of Loctite 277 has been particularly appreciated, as it allows users to complete their projects efficiently.

Moreover, some customers have highlighted how this adhesive has improved the reliability of their assemblies, reducing the likelihood of any loosening or breakages.

Customer Feedback On Loctite 271

When it comes to Loctite 271, customers have shared positive experiences regarding its performance. Users value this adhesive for its impeccable strength and reliability.

One of the key features that customers appreciate about Loctite 271 is its versatility, as it can easily bond various materials, including metals and plastics.

Additionally, many customers have noted that this adhesive cures quickly and provides a secure hold even in high-vibration environments.

Case Studies On Product Performance

What better way to showcase the effectiveness of Loctite 277 and Loctite 271 than through real-life case studies? Let’s take a look at a couple of examples that illustrate the outstanding product performance of both adhesives.

Case Study 1: Automotive Industry

Company Problem Solution Results
ABC Automotive Frequent loosening of critical components Switched to Loctite 277 No instances of loosening reported for 12 months
See also  Loctite Shoe Glue Vs Shoe Goo -Which Adhesive Is The Best?

In this case study, ABC Automotive was experiencing the issue of critical components frequently coming loose, leading to production delays and potential safety hazards.

By adopting Loctite 277, they were able to secure these components effectively, resulting in zero instances of loosening reported for an entire year. This significantly improved their production efficiency and overall product reliability.

Case Study 2: Engineering Firm

Company Problem Solution Results
XYZ Engineering Weak bond between metal parts Utilized Loctite 271 Increased strength and durability of assemblies

In this case study, XYZ Engineering faced the challenge of weak bonds between metal parts, leading to frequent repair and maintenance.

By incorporating Loctite 271 into their assembly process, they experienced a remarkable improvement in the strength and durability of their assemblies. This resulted in reduced maintenance costs and increased customer satisfaction due to enhanced product quality.

These case studies serve as proof that both Loctite 277 and Loctite 271 deliver exceptional performance, solving critical bonding challenges across various industries.

Selection Guide

When deciding between Loctite 277 and 271, consider the specific requirements of your project. Loctite 277 offers high strength and is ideal for large fasteners, while Loctite 271 is designed for smaller bolts and fittings. Each adhesive has unique properties, so choose according to the application’s needs.

Frequently Asked Questions Of Loctite 277 Vs 271

What Is 277 Loctite Used For?

277 Loctite is used for bonding, sealing, or locking threaded fasteners. It provides strong and durable adhesion for various materials.

What Is The Difference Between Loctite 277 And Loctite 272?

Loctite 277 is a high-strength threadlocker for fasteners up to 1 inch, while Loctite 272 is designed for larger fasteners up to 1. 5 inches.

What Is The Alternative To Loctite 277?

An alternative to Loctite 277 is the Permabond A136. It is a high-strength anaerobic adhesive used for similar applications.

Which Loctite Is The Strongest?

Loctite Ultra Gel Control is the strongest adhesive offered by Loctite. It provides a durable, impact-resistant bond on a wide range of materials.


In understanding the differences between Loctite 277 and 271, it’s essential to choose the right adhesive for your specific needs.

The unique features and applications of each product cater to diverse requirements, offering reliability and efficiency in securing your assemblies. Make an informed choice for optimal results.

Leave a Comment