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Anti-Seize Lubricant: Uses, Types, FAQ
What is Anti-Seize?
Metal corrodes and causes parts to stop working. Anti-seize is a type of lubricant that addresses this problem. It does so with a suspension of metal lubricating particles in a high-temperature grease base. So, in addition to minimizing corrosion, it also reduces friction and the torque needed to fasten bolts.
Anti-seize is used in many applications with metal-on-metal contact, both dissimilar and similar. You apply it to bolt threads and other fasteners. It is particularly good at preventing galling in high-use fasteners. Therefore, it is ideally suited for use on bolts and flanges requiring frequent removal.
A high-quality anti-seize lubricant serves several purposes. It will:
- Provide lubrication to fasteners
- Reduce torque needed for fastening
- Prevent galling and thread wear
- Reduce or prevent the need for future maintenance
General Use
Once you understand a few general concepts about anti-seize products, using them becomes easier and more effective. These include answers to questions such as:
- What is anti-seize used for?
- Where should I use anti-seize lubricant?
Types of Surfaces
Anti-seize is applied to various metal surfaces, many of which share similar weaknesses. First, many metals used in automotive applications are prone to corrosion. Anti-seize lubricates these surfaces and reduces the risk of corrosion.
Other metals are susceptible to wear, especially when they are frequently removed or subject to constant friction. Joining mixed metals is known to create problems due to different material qualities. This can affect the connection and increase the chance of thread damage. An appropriate lubricant in these areas reduces thread wear and galling in many cases.
Vehicle Parts
Some vehicle parts are better suited to anti-seize than others. Additionally, each type of lubricant will have varying degrees of effectiveness depending on the characteristics of the material it is used on.
For example, a high-temperature product is necessary for exhaust manifold bolts or other similar applications. Because of their high metal content, anti-seize lubricants are well-suited for this type of use. Some of the most common high-temp parts that require frequent removal and maintenance include exhaust, suspension, and brake systems.
- Exhaust systems — Using anti-seize on exhaust bolts and clamps makes them easier to remove for maintenance and repair. Choose a product specifically designed to withstand extreme temperatures found in exhaust systems, which can reach up to 1000 degrees Fahrenheit in some vehicles.
- Brake components — Anti-seize is commonly used on brake caliper bolts to reduce the chance of seizing and make maintenance easier.
- Suspensions — Components, including ball joints and tie-rods, can be difficult to remove without proper lubrication.
- Wheel studs — You can prevent stuck lug nuts by applying the correct anti-seize compound. Be sure to reduce the torque used to tighten them by the recommended amount.
- Electrical connections — Anti-seize helps reduce corrosion on battery terminals. It can also make changing spark plugs easier, but it comes with a warning. You must be careful to apply only as much as necessary to coat threads and reduce the torque used to tighten them to avoid damage.
How It Works
High-temperature grease makes up the base for anti-seize products. Graphite and metal lubricating particles are suspended in this grease, giving the final product its anti-corrosive and lubricating properties. Typical metals used include:
- Aluminum
- Copper
- Nickel
Importance of Anti-Seize
Benefits of using an appropriate lubricant include keeping parts running smoothly and preventing damage to connection from galling and corrosion.
The unique formulation of anti-seize prevents it from drying out and contracting, making it an ideal addition when joining dissimilar metals.
Perhaps the most significant benefit of using an appropriate anti-seizing compound on automotive parts is its ability to make disassembly easier. This is most pronounced in parts that require frequent maintenance, such as wheel lugs and brake caliper bolts.
Types of Anti-Seize
Application Type
Spray it on. Spray-on compounds are excellent for hard-to-reach areas and materials subject to high temps.
Apply it like glue with an applicator. Squeeze tubes make precise application simple and mess-free.
Apply it with a brush. Whether you buy anti-seize in a bottle with an applicator brush included or use your own brush with a large tub, this is a simple application method application.
Material Type
Several metals are used in anti-seize formulations. Each has a unique set of qualities that make it suitable for certain applications. Learn more so you can confidently choose between anti-seize copper vs aluminum anti-seize.
Copper
This formulation is excellent for high-temperature applications, such as turbocharger flanges, spark plug threads, and exhaust manifold bolts.
Aluminum
Aluminum (or silver) anti-seize is an excellent all-around lubricant for metal-on-metal contact. You'll notice the main difference between aluminum vs copper anti-seize is temperature tolerance.
Nickel
Nickel-based lubricants provide excellent resistance to chemical corrosion. They are particularly well-suited to high-temperature applications, such as exhaust systems and on stainless steel fasteners.
Related Products:
Application
Applying anti-seize is simple if you follow these basic guidelines.
Only use anti-seize on threads that will be covered after assembly. Using it on exposed threads attracts contaminants that may damage the materials.
Use just enough product to thinly coat the threads. Excess grease can contaminate other parts and cause a mess.
Always apply anti-seize to properly prepped surfaces. Take the following steps before application:
- Clean any dirt or dust from threads.
- Remove any residual grease with an appropriate cleaner.
- Inspect threads to ensure they are in good condition with no visible damage.
Choosing the Right Anti-Seize
Use the following questions to choose the right type of anti-seize product for your application:
- What's it for? The area of a vehicle and typical pressure will affect your decision.
- Will this compound come into contact with acids? If so, choose a lubricant that can withstand corrosive conditions.
- Will this area of the vehicle be subject to high temperatures? You must also consider the working temperature of a surface when choosing an appropriate lubricant.
- What types of metals are you working with? The metal types and whether or not they are similar effect which anti-seize you use.
Frequently Asked Questions
With something as important as anti-seize, you are bound to have questions. Here are answers to some of the most frequently asked questions about anti-seize lubricants.
1. What Is Anti Seize Lubricant Used for?
Anti-seize is used to lubricate fastener connections, reduce corrosion, and prevent thread damage and seizing.
2. Should I Use Anti Seize on Spark Plugs?
The seemingly simple question, "Should you put anti-seize on spark plugs?" can elicit passionate responses on either side of the debate. As a general rule, it is safe to use anti-seize on spark plugs given the following:
- You are familiar with the pressure needed to tighten the plugs.
- You know how to adjust that for the reduced friction of lubricated threads.
- The spark plug manufacturer does not explicitly say not to use it.
If you choose to use an anti-seize compound on spark plug threads, you should keep the following points in mind:
- Most spark plugs ship from the factory with lightly greased threads.
- Using anti-seize against a part manufacturer guideline may void a warranty.
- Overtightening spark plugs could result in thread damage or metal shell stretch (and removing the cylinder head for repairs).
3. What Is the Difference Between Copper and Nickel Anti Seize?
These two products use different metals to reduce friction but can be used for similar applications. For example, consider the following when comparing copper vs nickel anti-seize:
Copper is versatile and performs well under high-pressure loads and in a wide range of temperatures, up to about 1,800 degrees Fahrenheit.
Nickel can withstand higher temperatures and offers excellent resistance to highly corrosive conditions.
4. Do I Need To Reapply Anti-Seize Thread Lubricant?
Unlike other lubricants, replacing anti-seize grease is unnecessary once applied. It is designed to be used for the service life of a connection.
Remember that if you remove a connection, you should clean and regrease it before reassembly.
5. How Do I Remove Anti-Seize?
Removing anti-seize takes a heavy-duty degreaser or automotive solvent. Use a soft rag or cloth to apply the cleaner to greased surfaces. Avoid abrasives because they can damage surfaces. If you choose a solvent, follow proper safe handling and disposal procedures.
Anti-seize lubricant is a useful tool around any auto repair shop. It lubricates parts, reduces friction, and helps minimize the need for maintenance. First, however, you must take time to learn about the many types of anti-seize available, what applications each is best suited for, and how to use it effectively.
Sources:
- https://rogofastener.com/product-category/anti-sieze.html
- https://www.gorillapro.com/resources/blog/how-to-determine-which-anti-seize-compound-to-use
- https://www.rocol.com/knowledge-centre/rocol_expert/what-is-anti-seize
- https://majorbrandsoil.com/blogs/news/anti-seize-lubriant-or-grease