In the world of industrial adhesives, Loctite is a household name that is synonymous with high-quality and reliable products. Among their many offerings, Loctite 515 and 518 have a strong reputation as go-to sealants for various industrial applications.
While similar, these two products have distinct characteristics that set them apart. Here, we will delve into the specifics of Loctite 515 and 518 and analyze their strengths and areas of application. Furthermore, we will discuss the importance of choosing the right sealant for your specific needs and how Loctite 515 and 518 can be a game-changing addition to your industrial toolkit.
Whether you are a manufacturing or DIY enthusiast professional, understanding the differences between these two sealants is crucial to making an informed decision and achieving the best results. So, let’s dive into the Loctite 515 Vs 518 comparison and discover their importance in industrial adhesives.
Main Difference Between Loctite 515 Vs 518 Gasket Sealant
Knowing their differences is essential when choosing the right sealant between Loctite 515 vs 518 for your gasket or flange needs. We intend to use both sealants for sealing rigid metal faces with medium strength and medium cure speed.
While Loctite 515 is preferable when dealing with gaps up to 0.25 mm, Loctite 518 can handle gaps of up to 0.5 mm in compression situations like compressors, axle covers, etc., making it ideal in high-pressure scenarios.
Both offer general-purpose use with typical applications like motor housings or metal flanges. However, rigid flanged connections or cast iron need chemical-resistant seal options such as Hylomar or Hondabond gel.
Review Of Loctite 515 Gasket Sealant
Loctite 515 is an anaerobic flange sealant that is designed for use in high-temperature applications. It has a temperature range of -65°F to 300°F (-54°C to 149°C), making it suitable for sealing transmission housings and other automotive components.
The sealant is applied as a liquid and cures in the absence of air, forming a flexible and durable seal. Its consistency is similar to silk thread, allowing easy application and uniform coverage. Loctite 515 is an excellent choice for sealing flanges and preventing leaks in high-temperature environments.
Features Of 515 Gasket Sealant
- High-temperature resistance
- Oil resistance.
- Fast curing time
- Versatile application
- Excellent adhesion
- Chemical resistance
- Easy application
- Flexible and durable
- Good gap-filling properties
- Long shelf life
Pros:
- Effective sealing
- Versatile application
- Quick curing time
- Resistance to fluids
- Easy and clean application
Cons:
- Limited temperature resistance
- Initial tackiness
Chemical Composition Of Loctite 515 Gasket Sealant
Loctite 515 gasket sealants are a reliable choice for sealing aluminum surfaces and aluminum flanges. It is commonly handy as a gasket for pumps and other applications where high chemical resistance and temperature capabilities are required.
The chemical composition of Loctite 515 includes a mixture of silicone polymers, fillers, and curing agents. This combination allows the sealant to provide excellent adhesion on various substrates, including aluminum. When applying Loctite 515, following the recommended application methods is important to ensure proper bonding and long-lasting performance.
Review Of Loctite 518 Gasket Sealant
Loctite 518 Gasket Sealant is a flexible and chemical-resistant sealant designed for transmission systems, particularly on steel flanged connections. It is a single-component sealant that can be handy with the thread method, making it easy to apply.
This gasket sealant provides a reliable and durable seal, even in high-pressure environments. Its flexibility allows for slight movement and vibration without compromising a flexible, chemical-resistant seal. Overall, Loctite 518 is an excellent choice for ensuring leak-free connections in transmission systems.
Features of 518 Gasket Sealant
- High-temperature resistance
- Chemical resistance
- Fast curing
- Excellent adhesion
- Versatility
- Durable sealing
- Easy application
- Resistance to vibrations
- Flexible and elastic
- Cost-effective
Pros:
- Excellent sealing properties
- Versatility
- Easy application
- Fast curing time
Cons:
- Not suitable for all fluids
Chemical Composition Of Loctite 518 Gasket Sealant
The Loctite 518 gasket sealant is specifically designed for use on rigid iron and steel flanged mating surfaces. It is commonly handy in applications such as sealing exhaust manifolds, water pumps, and other automotive components.
The chemical composition of Loctite 518 includes a faster-setting anaerobic adhesive that forms a strong bond between the mating surfaces. This adhesive is resistant to water, oil, and most chemicals, making it ideal for sealing applications in harsh environments. Overall, Loctite 518 provides reliable and durable sealing for a variety of industrial and automotive applications.
Comparison Of Features Between Loctite 515 Vs 518 Gasket Sealant
| Features | Loctite 515 Gasket Sealant | Loctite 518 Gasket Sealant |
| Temperature resistance | Up to 350°F (177°C) | Up to 300°F (149°C) |
| Cure time | 1 hour | 2 hours |
| Application | Suitable for rigid and flexible flanges | Suitable for rigid flanges only |
| Chemical resistance | Resistant to oils, fuels, water, and chemicals | Resistant to oils, fuels, and water |
| Sealant color | Red | Purple |
| Maximum gap fill | 0.020″ (0.5mm) | 0.040″ (1mm) |
| Fluid resistance | Resistant to low-pressure fluids | Resistant to high-pressure fluids |
| Viscosity | Medium | High |
| Shelf life | 24 months | 18 months |
| Recommended applications | Transmission, oil pans, valve covers, water pumps | Valve covers, oil pans, differential covers |
Recommended Substrates For Loctite 515 And 518 Gasket Sealant
Regarding vehicles, Loctite 515 and 518 are popular for gasketing and sealing applications. These anaerobic sealants are designed to withstand high vibration levels, thermal cycling, and chemical exposure. It’s important to use the right substrate for each product to achieve the best results.
For Loctite 515, recommended substrates include aluminum, brass, cast iron, steel, and zinc-plated steel. For Loctite 518, recommended substrates include aluminum, brass, cast iron, steel, stainless steel, and zinc-plated steel. It’s important to note that Loctite 518 is designed for use on flanges with large diameters and irregular surfaces.
Cure Time And Strength Of Loctite 515 And 518 Gasket Sealant
Regarding vehicle repairs, the cure time and strength of adhesives like Loctite 515 and 518 are crucial factors to consider. People use Loctite 515 as a gasket eliminator to seal and bond flanges in automotive and industrial applications. This anaerobic adhesive cures when confined between two metal surfaces without the presence of air.
It has a cure time of 24 hours and provides high chemical resistance and flexibility. Loctite 518 is a gasket maker ideal for sealing flanges in transmission pans, timing covers, and oil pans. It cures in the presence of metal and has a cure time of 24 hours.
What Is The Difference In Performance Between Loctite 515 And 518 Gasket Sealant?
Loctite 515 and 518 gasket sealants are widely used in various applications, but they have some performance differences. Loctite 515 is a flange sealant that provides excellent resistance to low pressures and temperatures, making it ideal for applications with minimal gaps between the mating surfaces.
On the other hand, Loctite 518 is specifically designed for use on rigid iron, steel, and aluminium flanges, offering superior resistance to high pressures and temperatures.
It forms a flexible yet durable seal that can withstand vibrations and impact. So, when it comes to choosing between Loctite 515 and 518, it is important to consider the specific requirements of your application in terms of pressure, temperature, and the type of materials involved. While they have some similarities, there are a few key differences in their performance:
- Cure Time
- Temperature Resistance
- Gap Filling
Overall, the choice between Loctite 515 and 518 will depend on the specific requirements of your application. If you need a fast-curing sealant with good temperature resistance, Loctite 515 may be the better option.
Price Comparison Between Loctite 515 And 518 Gasket Sealant
Regarding the price comparison between Loctite 515 and 518 gasket sealant, there are a few factors to consider. While the exact prices may vary depending on the retailer and location, generally speaking, Loctite 515 is typically more affordable than Loctite 518.
The approximate price for Loctite 515 can range from $10 to $20 per tube, while Loctite 518 can range from $15 to $30 per tube. It’s important to note that these prices are subject to change and may not reflect current market prices. Check with local retailers or online suppliers to get the most accurate pricing information.
How To Apply Loctite 515 And 518 Gasket Sealant For Best Results?
Applying Loctite 515 and 518 for the best results requires following simple steps. First, ensure the surfaces are clean and free from oil or grease. Apply the sealant in a thin, even layer onto one of the surfaces to be sealed. Assemble the parts immediately and tighten them to the specified torque values.
Allow sufficient cure time before subjecting to pressure or other stresses. Curing times may vary depending on factors like temperature, humidity, and gap size. It is also important to carefully read and follow the manufacturer’s instructions for maximum effectiveness and safety.
Where To Buy Loctite 515 And 518 Gasket Sealant?
When you’re purchasing Loctite 515 or 518, there are a few options available. Both products can be found on the Loctite website and popular online retailers such as Amazon and eBay. Loctite products can typically be found at hardware and industrial supply stores for those who prefer to shop in-store.
It is important to note that while Loctite 515 and 518 are sealants designed for similar applications, they have slightly different properties and may not be interchangeable in all cases. If you are unsure which product is best suited for your needs, carefully read the product specifications and consult with a professional.
Conclusion
When choosing between Loctite 515 vs 518, the decision ultimately depends on your specific needs and application. Both adhesives offer excellent sealing capabilities and can withstand various temperatures and pressures. However, Loctite 515 and 518 are excellent products with superior flange sealing performance.
The choice between the two depends on your specific requirements. Loctite 515 is ideal for use with rigid flanges, while Loctite 518 recommends flexible flanges. With their strong bonds and durable properties, either option is a solid choice for any project. Ultimately, it is recommended to consult with a professional or refer to the product’s technical data sheet to determine which sealant best fits your specific needs.
Frequently Asked Questions
What Is Loctite 515 Used For?
Loctite 515 is a gasket eliminator handy for sealing rigid flange connections. It specifically has specific designs to be handy on clean surfaces and acts as a flexible sealant, filling gaps and preventing leakage in automotive, industrial, and other applications.
What Is Loctite 518 Used For?
Loctite 518 is a flexible sealant commonly handy for sealing engine casings. It has specific designs to create a reliable, leak-proof seal between metal flanges. It can withstand high temperatures and pressures, making it ideal for automotive and industrial applications.
What Is Similar To Loctite 515?
Permatex 51813 Anaerobic Gasket Maker is a similar product to Loctite 515. It has specific designs for flexible flanges and can form a continuous bead for sealing purposes.
What Is Loctite 518 Equivalent To?
Loctite 518 is an anaerobic gasket sealant often handy on flange surfaces. An equivalent product would be Permatex 51813 or ThreeBond 1217H. These products have specific designs to provide a reliable and durable seal on flange surfaces, helping to prevent leaks and improve overall performance.
Does Loctite 518 Expire?
Loctite 518 does have a shelf life and can expire. Check the packaging for the expiration date, or contact the manufacturer for more specific information.