Anti-seize Compounds Reviews and Ratings

A bolt that went in easily comes out with a snap, and the threads come with it. Heat, rust and road salt weld fasteners together over time, and the next service turns into a broken stud, a stripped thread and a tow.

Anti-seize compound is the cheap insurance against that. A thin film of copper, nickel or aluminium paste on the threads keeps the bolt turning after years of heat and weather, and it also keeps the torque reading honest, so the bolt is tightened to the right load instead of a false one.

This guide reviews five anti-seize compounds, explains which metal formula suits brakes, exhaust, spark plugs and stainless fasteners, and shows how to apply them so the compound helps instead of hurting.

Our quick picks

Quick comparison

How to choose an anti-seize compound

Metal formula

Metal formula decides where the compound is safe to use. A standard formula suits most steel bolts, a copper formula suits brakes and exhaust, and a nickel formula suits stainless steel and the hottest joints. Match the formula to the metal, not to the price, because the wrong metal on the wrong fastener causes the very seizing you are trying to prevent. ABS Scan Tools vs OBDII

Temperature limit

Temperature limit decides whether the compound survives the job. A standard compound handles up to 1600 degrees Fahrenheit per maker, a copper compound up to 1800, and a nickel compound up to 2400. Check the maker limit against the hottest part you will coat, and treat a missing figure as a warning. AGM Batteries Review for Cars

Applicator

Applicator decides how clean the job is. A brush bottle is fastest for many fasteners, a squeeze tube is precise on brake parts, and a stick is cleanest for field work. Buy the applicator that matches the job: a big exhaust job needs a brush, a brake job needs a tube, and a roadside repair needs a stick. AGM Batteries Cost

Stainless steel

Stainless steel needs nickel, not copper or standard compound. Copper can cause galvanic corrosion on stainless, and a standard compound can cause galling, which is the cold welding of the threads. If the fastener is stainless, buy nickel, and check the maker guidance before you apply anything else. AGM Batteries vs Flooded

Torque effect

Torque effect decides how tight the bolt really is. Anti-seize lowers friction, so a bolt tightened to the same torque with anti-seize is tighter than one tightened dry. Reduce the torque by the amount the maker specifies, or the bolt may be over-tightened and the threads damaged. AGM Batteries vs Lead-Acid

Where not to use it

Where not to use it matters as much as where to use it. Keep anti-seize off brake pad faces, rotors and any friction surface, off wheel studs unless the maker calls for it, and off oxygen sensor threads, where the compound can contaminate the sensor. When in doubt, leave it off. 12V Car Heaters Reviews Best Models

Anti-seize compounds by budget

Types of anti-seize compounds compared

Detailed reviews

Each compound below covers a different formula or applicator: a standard brush bottle, a copper brush bottle, a nickel bottle, a copper brake lube tube, and a copper stick. Match the formula to the metal and the applicator to the job.

Best Overall: Permatex Anti-Seize Lubricant 80078

Best Overall

Why the Permatex 80078 is our pick

The Permatex 80078 is the overall pick because it is the general-purpose anti-seize that covers the most jobs: spark plug threads, exhaust manifold bolts, brake hardware, battery terminals and any fastener that sees heat and weather. The listing describes an 8 ounce brush-top bottle of anti-seize lubricant with a temperature range of minus 60 degrees Fahrenheit to 1600 degrees Fahrenheit, and it meets Mil Spec 907E. The brush in the cap applies a thin even film without a separate applicator, which is why it is the one most mechanics reach for first.

Permatex 80078 key specs

• Type: Anti-seize lubricant
• Maker: Permatex
• Model: 80078
• Size: 8 ounce brush-top bottle
• Temperature range: -60 F to 1600 F per maker
• Spec: Meets Mil Spec 907E
• Use: Spark plugs, exhaust bolts, brake hardware, battery terminals
• Application: Brush in cap
• Formula: Standard anti-seize
• Listing: Verified
• Colour: Silver-grey
• Also: 1 ounce and 16 ounce sizes per listing

Permatex 80078: fits and best for

This anti-seize fits a home mechanic who wants one bottle for most jobs, and a professional who needs a general-purpose compound for spark plugs, exhaust bolts and brake hardware. It suits any fastener that sees heat, rust and road salt, and it is the right choice when you want one compound rather than three.

Permatex 80078 pros and watch-outs

Permatex 80078: what owners report

Permatex 80078: who should not buy

Do not buy this for stainless steel fasteners in high heat. The standard formula can cause galling on stainless, and the nickel formula from this guide is the right choice there.

Permatex 80078: pair it with

Pair it with a wire brush and a torque wrench, so the threads are clean before you apply the compound and the bolt is tightened to the right load.

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Best Copper Formula: Permatex Copper Anti-Seize Lubricant 09128

Best Copper Formula

Why the Permatex 09128 Copper is our pick

The Permatex 09128 is the copper pick because copper anti-seize is the formula most brake and exhaust jobs call for. The listing describes an 8 ounce brush-top bottle of copper anti-seize lubricant with a temperature range of minus 60 degrees Fahrenheit to 1800 degrees Fahrenheit, and it is made for high-temperature applications such as exhaust manifold bolts, brake caliper hardware and spark plug threads. Copper conducts heat well and resists seizing at temperatures the standard formula cannot reach, which is why it is the right choice for the hottest parts of the car.

Permatex 09128 Copper key specs

• Type: Copper anti-seize lubricant
• Maker: Permatex
• Model: 09128
• Size: 8 ounce brush-top bottle
• Temperature range: -60 F to 1800 F per maker
• Use: Exhaust bolts, brake hardware, spark plugs
• Application: Brush in cap
• Formula: Copper
• Listing: Verified
• Colour: Copper
• Also: 16 ounce size per listing
• Note: Not for stainless steel

Permatex 09128 Copper: fits and best for

This anti-seize fits a mechanic who works on brakes and exhaust, and a home owner who wants one copper compound for the hottest fasteners on the car. It suits exhaust manifold bolts, brake caliper hardware and spark plug threads, and it is the right choice when the temperature goes past what the standard formula handles.

Permatex 09128 Copper pros and watch-outs

Permatex 09128 Copper: what owners report

Permatex 09128 Copper: who should not buy

Do not buy this for stainless steel fasteners. Copper can cause galvanic corrosion on stainless, and the nickel formula from this guide is the right choice there.

Permatex 09128 Copper: pair it with

Pair it with copper-free brake cleaner and a torque wrench, so the threads are clean and the bolt is tightened to the right load.

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Best Nickel Formula: Permatex Nickel Anti-Seize Lubricant 77164

Best Nickel Formula

Why the Permatex 77164 Nickel is our pick

The Permatex 77164 is the nickel pick because nickel anti-seize is the formula for stainless steel and the hottest jobs. The listing describes a 16 ounce bottle of nickel anti-seize lubricant with a temperature limit up to 2400 degrees Fahrenheit per maker, and it is made for stainless steel fasteners, exhaust systems and any joint that sees extreme heat. Nickel resists galling on stainless where copper and standard formulas can fail, which is why it is the right choice for marine, exhaust and stainless hardware.

Permatex 77164 Nickel key specs

• Type: Nickel anti-seize lubricant
• Maker: Permatex
• Model: 77164
• Size: 16 ounce bottle
• Temperature limit: Up to 2400 F per maker
• Use: Stainless steel fasteners, exhaust, high heat
• Application: Brush-top bottle per listing
• Formula: Nickel
• Listing: Verified
• Colour: Silver-grey
• Also: 8 ounce size per listing
• Note: For stainless steel

Permatex 77164 Nickel: fits and best for

This anti-seize fits a mechanic who works on stainless steel fasteners, and a boat or exhaust specialist who needs a compound that survives extreme heat. It suits stainless hardware, marine fasteners and exhaust joints, and it is the right choice when copper and standard formulas are not safe to use.

Permatex 77164 Nickel pros and watch-outs

Permatex 77164 Nickel: what owners report

Permatex 77164 Nickel: who should not buy

Do not buy this for ordinary steel bolts. The nickel formula costs more than the standard compound, and a standard anti-seize does the same job on steel for less.

Permatex 77164 Nickel: pair it with

Pair it with a stainless wire brush and a torque wrench, so the threads are clean and the bolt is tightened to the right load.

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Best Brake Lube: 3M Copper Anti-Seize Brake Lube 08945

Best Brake Lube

Why the 3M 08945 is our pick

The 3M 08945 is the brake pick because it is a copper anti-seize made for brake hardware, in a squeeze tube that applies a thin film exactly where it belongs. The listing describes a 9 ounce tube of copper anti-seize brake lube, made for brake caliper hardware, pad abutment clips and any brake part that needs to slide without seizing. The tube gives better control than a brush bottle on small brake parts, which is why it is the right choice for a brake job.

3M 08945 key specs

• Type: Copper anti-seize brake lube
• Maker: 3M
• Model: 08945
• Size: 9 ounce squeeze tube
• Use: Brake caliper hardware, pad clips, brake parts
• Application: Squeeze tube
• Formula: Copper
• Listing: Verified
• Colour: Copper
• Also: 5 ounce size per listing
• Note: For brake hardware
• Part number: 08945

3M 08945: fits and best for

This brake lube fits a mechanic who does brake jobs often, and a home owner who wants a copper compound that applies cleanly to small brake parts. It suits caliper hardware, pad clips and slide pins, and it is the right choice when the brush bottle is too clumsy for the job.

3M 08945 pros and watch-outs

3M 08945: what owners report

3M 08945: who should not buy

Do not buy this as your only anti-seize. It is a brake lube in a tube, and a general job needs the brush bottle from this guide instead.

3M 08945: pair it with

Pair it with brake cleaner and a small brush, so the caliper hardware is clean before you apply the lube.

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Best Stick Applicator: Loctite Copper Anti-Seize Stick C5-A 37616

Best Stick Applicator

Why the Loctite 37616 Stick is our pick

The Loctite 37616 is the stick pick because a solid stick applies anti-seize exactly where it belongs, with no brush, no bottle and no mess. The listing describes a 20 gram copper anti-seize stick, C5-A, made for threaded fasteners, flanges and any joint that needs a thin film of copper compound. The stick format suits a toolbox and a field repair, where a brush bottle would leak, and the copper formula handles the same high temperatures as the brush bottle version.

Loctite 37616 Stick key specs

• Type: Copper anti-seize stick
• Maker: Loctite
• Model: 37616, C5-A
• Size: 20 gram stick
• Use: Threaded fasteners, flanges, high-temperature joints
• Application: Solid stick, rub on
• Formula: Copper
• Listing: Verified
• Colour: Copper
• Also: Larger sizes per listing
• Note: For precise application
• Part number: 37616

Loctite 37616 Stick: fits and best for

This stick fits a mechanic who wants a clean applicator for field work, and a home owner who hates the mess of a brush bottle. It suits threaded fasteners, flanges and any joint where a thin film is needed, and it is the right choice when precision matters more than volume.

Loctite 37616 Stick pros and watch-outs

Loctite 37616 Stick: what owners report

Loctite 37616 Stick: who should not buy

Do not buy this as your only anti-seize for a big job. The 20 gram stick is for precise work, and a full exhaust job needs the brush bottle from this guide instead.

Loctite 37616 Stick: pair it with

Pair it with a wire brush and a rag, so the threads are clean and the excess is wiped away.

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Spec comparison

Applying anti-seize compound

Clean the threads with a wire brush before you apply anything, because anti-seize on a dirty thread traps grit and makes the joint worse, not better. Apply a thin film to the male threads only, and keep it off the bolt head, the mating face and any friction surface. The Permatex anti-seize technical data sheet gives the maker guidance on application and temperature limits. 12V Adapters Reviews for Cars

Reduce the torque by the amount the maker specifies, because anti-seize lowers friction and a bolt tightened to the dry torque is over-tightened. Tighten the bolt slowly, check the torque with a wrench, and wipe away any excess that squeezes out, so it does not stain the surrounding parts. The ToolKnows Permatex 81343 review covers the same Permatex anti-seize range, with notes on brush application. 12V Adapters Reviews Best

Safety essentials

Troubleshooting

Most anti-seize problems trace to one of the causes below, and the fix is usually a cleaner thread or a thinner film rather than a different compound.

Who should NOT buy these

Do not use copper on stainless steel. Copper can cause galvanic corrosion on stainless fasteners, and the joint may seize worse than if no compound was used at all. Use the nickel formula from this guide on stainless, and check the maker guidance before you apply anything else. 12V Adapters Review Amazon

Do not over-apply the compound. A thick coat changes the torque reading and makes a mess, while a thin film does the whole job. Apply a thin film to the male threads only, and wipe away any excess that squeezes out. 12V Adapters Alternative for LED Lights

Do not put anti-seize on a friction surface. Brake pad faces, rotors and clutch surfaces must stay clean, and anti-seize on them ruins braking or causes slipping. Keep the compound on the threads and the hardware, never on a surface that grips. 12V Adapters Alternative to USB

Do not skip the torque reduction. Anti-seize lowers friction, so a bolt tightened to the dry torque is over-tightened, and the threads may be damaged. Reduce the torque by the amount the maker specifies, and check it with a torque wrench. Best ATV Winch

Final verdict

Best Overall: Permatex 80078 Check Price — the standard anti-seize for general use.

Best Copper Formula: Permatex 09128 Copper Check Price — a copper formula for brakes and exhaust.

Best Nickel Formula: Permatex 77164 Nickel Check Price — a nickel formula for stainless and high heat.

Best Brake Lube: 3M 08945 Check Price — a copper brake lube in a squeeze tube.

Best Stick Applicator: Loctite 37616 Stick Check Price — a copper anti-seize stick for precise application.

FAQ

What is the best anti-seize compound for general use?

The Permatex 80078 is the best general-purpose choice, with a brush-top bottle and a temperature range of minus 60 to 1600 degrees Fahrenheit per maker. It covers spark plugs, exhaust bolts, brake hardware and battery terminals, and it meets Mil Spec 907E. For stainless steel, use the nickel formula instead.

Is copper anti-seize safe on stainless steel?

No. Copper can cause galvanic corrosion on stainless steel fasteners, and the joint may seize worse than with no compound at all. Use a nickel anti-seize on stainless steel, and check the maker guidance before applying any compound to a stainless fastener.

What temperature can anti-seize handle?

It depends on the formula. A standard compound handles up to 1600 degrees Fahrenheit per maker, a copper compound up to 1800, and a nickel compound up to 2400. Check the maker limit against the hottest part you will coat, and treat a missing figure as a warning.

Should I use anti-seize on spark plugs?

Yes, on the threads, in a thin film. Anti-seize keeps the spark plug from seizing in the head, which matters on aluminium heads. Keep it off the electrode and the insulator, and reduce the torque per the maker guidance, because the compound lowers friction.

Can I use anti-seize on wheel studs?

Only if the maker calls for it. Anti-seize lowers friction, so a wheel nut tightened to the dry torque with anti-seize is over-tightened, which can stretch the stud. Many makers say to keep wheel studs dry, so check the owner manual before applying anything.

How much anti-seize should I apply?

A thin film on the male threads only. A little goes a long way, and a thick coat changes the torque reading and makes a mess. Apply the film, thread the bolt in by hand to spread it, and wipe away any excess that squeezes out.

Does anti-seize affect torque?

Yes. Anti-seize lowers friction, so a bolt tightened to the same torque with anti-seize is tighter than one tightened dry. Reduce the torque by the amount the maker specifies, usually 20 to 30 percent, and check it with a torque wrench.

Can I use anti-seize on exhaust bolts?

Yes, a copper or nickel compound is the right choice for exhaust bolts, because exhaust temperatures exceed what a standard compound handles. Apply a thin film to the threads before assembly, and the bolts will come apart at the next service instead of snapping.

How long does anti-seize last in the bottle?

Years, if the cap is kept tight and the bottle is stored upright. The brush can dry out if the cap is left off, and the compound can separate if it is stored on its side. Stir or shake the bottle before use if it has sat for a long time.

Sources

• Heat Arrays, penetrating-oil guide
• AP Tuning, automotive lubricants guide
• Always Ready HQ, high-temp anti-seize guide
• ToolKnows, anti-seize guide
• ToolKnows, Permatex 81343 review
• RxMechanic, anti-seize guide
• FUCHS, copper anti-seize guide
• Top5Best, copper anti-seize guide
• Garage Journal, anti-seize thread
• Loctite, C5-A stick data sheet
• Bob Is The Oil Guy, nickel vs copper thread
• Manuals.plus, Permatex anti-seize TDS

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