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Park Tool ASC-1 Anti-Seize Compound

4.8 out of 5 stars 2,143 ratings
$9.95
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Purchase options and add-ons

Material Titanium
Grit Material Aluminum Oxide
Item dimensions L x W x H 1.5 x 2.5 x 8 inches
Brand Park Tool
Grit Type Fine

About this item

  • 100
  • Reduces friction in threaded and press fit connections
  • Protects parts from corrosion and rust under the most extreme conditions
  • ASC-1 also seals and protects parts from corrosion and rust under the most extreme conditions.
  • For use on steel, aluminum, and titanium. 4 oz tube.
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Top Brand: Park Tool

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Product Description

Park Tool ASC-1 being applied to threaded bottom bracket cup

Park Tool ASC-1 Anti-Seize Compound

Park Tool Anti-Seize Compound reduces friction in threaded and press fit connections for easy assembly and disassembly. Ideal for bottom bracket and pedal threads, pressed headset cups, seat posts, quill stems, etc. ASC-1 seals and protects parts from corrosion and rust under the most extreme conditions. For use on steel, aluminum, and titanium.

Park Tool ASC-1 comes in a 4 oz. (113 g) tube.

NOTE: Some painted surfaces can be sensitive to oil and grease. Clean off any excess oil or grease immediately. Test first on an inconspicuous area to see if it causes a stain or discoloration. ASC-1 can also stain fabrics - use appropriate caution.

Park Tool offers a full line of greases and compounds for thread and surface preparation:

PPL-1 Polylube 1000
HPG-1 High Performance Grease
ASC-1 Anti-Seize Compound
SAC-2 Assembly Compound
TLR-1 Medium Strength Threadlocker
RC-1 Press Fit Retaining Compound
Buying Options
Customer Reviews
4.8 out of 5 stars 10,099
4.8 out of 5 stars 3,676
—
4.8 out of 5 stars 2,050
4.7 out of 5 stars 213
4.6 out of 5 stars 180
Price $9.95 $13.95 — no data $12.95 $17.95 $19.95
Recommended application General purpose grease for bearings, threads, and general assembly Precision ground/ceramic bearings, pivots, suspension components Bottom bracket and pedal threads, pressed headset cups, seat posts, quill stems Seatposts, handlebars, stems Threaded bottom bracket cups, disc brake rotor bolts, stem bolts Press fit bottom bracket parts, pressed headset cups, sealed bearings
Park Tool bike shop repair center vintage

TRUSTED SINCE 1963

Since our origins in the back of a bike shop in 1963, it has been our sole mission to design and manufacture high-quality tools that empower mechanics and riders of all skill levels to service their bicycles. As with our other 500+ tools, our grease is a product of our decades of experience and expertise in the industry, in the shop and on the trail.

Product information

Technical Details

Material ‎Titanium
Grit Material ‎Aluminum Oxide
Item dimensions L x W x H ‎1.5 x 2.5 x 8 inches
Brand ‎Park Tool
Grit Type ‎Fine
Compatible Material ‎Alloy Steel, Aluminum, Titanium
Item Weight ‎3.68 ounces
Grit Number ‎120
UPC ‎763477000071 744288037968
Number of Items ‎1
Global Trade Identification Number ‎00763477000071
Manufacturer ‎Park Tool
Item Package Dimensions L x W x H ‎7.83 x 2.28 x 1.38 inches
Package Weight ‎0.12 Kilograms
Item Dimensions LxWxH ‎1.5 x 2.5 x 8 inches
Brand Name ‎Park Tool
Model Name ‎Qkasc1
Color ‎One Color
Suggested Users ‎Cycling
Part Number ‎136868
Model Year ‎2014
Style ‎Cycling
Size ‎4 oz
Sport Type ‎Cycling

Additional Information

ASIN B000QSUW9A
Customer Reviews
4.8 out of 5 stars 2,143 ratings

4.8 out of 5 stars
Best Sellers Rank #9,865 in Sports & Outdoors (See Top 100 in Sports & Outdoors)
#3 in Bike Grease
Date First Available November 19, 2007

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Park Tool ASC-1 Anti-Seize Compound

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Customer reviews

4.8 out of 5 stars
2,143 global ratings

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Customers say

Customers find the anti-seize compound works well, with one mentioning its effectiveness on pedals, and appreciate its quality and value for money. The product is easy to apply and provides good thread lubrication, with one customer noting it goes a long way on metal surfaces. They value its anti-seize properties, with one mentioning it prevents parts from seizing together, and find it particularly useful for bicycles, with one noting its essential nature for titanium frames. The grease quality receives mixed reviews.

Select to learn more

Works wellQualityValue for moneyAnti-seizeUseEase of applicationThread lubricationGrease quality
42 customers mention "Works well"42 positive0 negative

Customers find that the anti-seize compound works great, particularly on threaded parts, with one customer noting its effectiveness on car doors.

"not much to say, works as it should... less messy than one of the bottles with the brush" Read more

"Awesome Compound, it really does work. I will say it's a lot for the price but since it's made in America you get what you pay for...." Read more

"I use this for titanium to aluminum or steel. Works great. After I had to drill out a titanium bolt, I never forget use a slight dab." Read more

"...It works as advertised and I’m impressed with how easy it made the job. Be sure to use rubber gloves because this is serious grease." Read more

26 customers mention "Quality"26 positive0 negative

Customers find the anti-seize compound to be of good quality, with one customer noting it's top-notch for bike maintenance and repair.

"...Great product - dumb packaging. That being said, it's a great product that should be in every bike owners tool box." Read more

"...If you have high quality aluminum, titanium, or carbon components, this compound is fantastic...." Read more

"...Park tool makes great stuff!" Read more

"...Park Tool purchase, you get what you pay for and that is super HIGH quality products. This has been great to use and so far no issues...." Read more

19 customers mention "Value for money"15 positive4 negative

Customers find the anti-seize compound to be worth the price, with one customer describing it as a life saver.

"...a bit on the expensive side in terms of lubricants but the peace of mind is worth it when you invest a lot in your bike parts and want them to last...." Read more

"...a tough time removing my old pedals, and decided to get this as it doesn't cost much and I expect to need it somewhat frequently." Read more

"...This stuff is a life saver! IMO Park Tool is the industry reference." Read more

"Good stuff - an absolute "must have" for any serious do-it-yourself bike owner. But don't let the oversized tube fool you...." Read more

11 customers mention "Anti-seize"11 positive0 negative

Customers find the anti-seize compound effective, with one mentioning it prevents parts from seizing together and another noting it keeps bolts from falling out.

"...and opted for this particular lube specifically because it is anti-seize. It's easy to use and the new seat post slid in easily as well...." Read more

"...It does it's job in preventing seize up when one needs to do maintenance on their bicycle. 🚲..." Read more

"...being attached to titanium bicycles it works perfectly and stops them galling or binding." Read more

"...The product squeezes out in a controlled manner. It applies like other anti seize compounds I’ve used...." Read more

8 customers mention "Use"8 positive0 negative

Customers find the anti-seize compound useful, with one mentioning it's essential for titanium bikes and another noting it works well for cassette and lock ring applications.

"great product great aount great price good for so many uses on my bike and im always swapping parts out" Read more

"...store, but I like the assurance from park tool that it is good for bikes. The tube is a much more convenient applicator than a brush and jar." Read more

"Essential for Ti and (maybe) Li Aluminum bikes!" Read more

"Good product works as described. Used for my titanium pedals and for the cleat screws on my cycling shoes. Both require use of an anti sieze product." Read more

6 customers mention "Ease of application"6 positive0 negative

Customers find the anti-seize compound easy to apply, with one mentioning that their seat post slid in easily.

"...It's easy to use and the new seat post slid in easily as well...." Read more

"...It works as advertised and I’m impressed with how easy it made the job. Be sure to use rubber gloves because this is serious grease." Read more

"...Will be using this from now on just for convenience and not having to slam bottle on counter to get antisieze back down on the bottles I usually use...." Read more

"Easy to apply. I used this anti-seize compound on the threads of my new bike pedals when installing the pedals on my bike...." Read more

6 customers mention "Thread lubrication"6 positive0 negative

Customers find the anti-seize compound effective for lubricating threads, with one customer noting it works well on limit screws and another mentioning it's closer to threadlock than grease.

"...it wasn’t just perfect for my bottom bracket, but Threaded surfaces like limit screws, axles, cone nuts, axle nuts, threaded spacers, etc...." Read more

"I'm pleased with alittle dab goes a along way on metal threads...." Read more

"...When I have to change or remove anything the screws come out like butter I highly recommend this product for any bolt you are concerned you may need..." Read more

"...It's closer to threadlock than grease, which is good. It prevents water infiltration, reduces creaking, and prevents things from getting stuck...." Read more

10 customers mention "Grease quality"5 positive5 negative

Customers have mixed opinions about the grease quality, with some finding it pretty good, while one customer notes it's different from regular grease.

"...However, you can use polylube to grease threads. So why get anti seize?..." Read more

"...Be sure to use rubber gloves because this is serious grease." Read more

"The actual grease is pretty good but there are some problems I’ve had...." Read more

"anti cease compound do not use as grease, not for moving parts, stationary threads only...." Read more

Awesome Bottom Bracket and grease Compound for threads on the Market!
5 out of 5 stars
Awesome Bottom Bracket and grease Compound for threads on the Market!
Awesome Compound, it really does work. I will say it's a lot for the price but since it's made in America you get what you pay for. It will last me a long time, as long as you use it in small amounts, it wasn’t just perfect for my bottom bracket, but Threaded surfaces like limit screws, axles, cone nuts, axle nuts, threaded spacers, etc. I've used this on Limit screws, my Bottom Bracket, any place with a machined threaded surface, hole etc. In fact on my bottom bracket shell of my frame was threaded, I did put ASC-1 grease on the threads inside the shell before installing the Bottom Bracket. The biggest problem I have had is the stripping of the threads, which is my biggest problem, so I started using it on screws on my derailleurs including my freewheel, and anything and everything with a threaded surface going into metal parts. This stuff really is awesome, and Park Tool is a brand and company I trust completely they really do know what they're doing. My only Recommendation to Park Tool is to put this in a tub like they have with PPL-1. Otherwise if you go through a lot of this you have to be prepared to spend a lot. Otherwise, I highly recommend it!
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Top reviews from the United States

  • Ron
    5.0 out of 5 stars Nice!
    Reviewed in the United States on April 22, 2025
    Verified Purchase
    not much to say, works as it should... less messy than one of the bottles with the brush
    Helpful
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  • ASAF
    5.0 out of 5 stars High quality staff
    Reviewed in the United States on September 26, 2024
    Verified Purchase
    Highly recommend together with MOTOREX
    One person found this helpful
    Helpful
     Report
  • XINYI
    5.0 out of 5 stars The expected effect
    Reviewed in the United States on April 22, 2025
    Verified Purchase
    I applied it to the joint between the pedals and cranks on my road bike and after a month of use I can still easily remove my pedals.
    One person found this helpful
    Helpful
     Report
  • George Nazzaro
    5.0 out of 5 stars What a buyer wants!
    Reviewed in the United States on March 22, 2025
    Verified Purchase
    Doesn't get any better, folks. Next day delivery, perfect item and perfectly packaged.
    Helpful
     Report
  • agzhl
    4.0 out of 5 stars Safe option for bikes with varying metal bike parts
    Reviewed in the United States on March 19, 2017
    Verified Purchase
    Bought a Thudbuster LT seat post and needed to clean and lube the shaft. Since I have a titanium frame, I did some research on different lubricants. Ultimately, I erred on the side of caution and opted for this particular lube specifically because it is anti-seize. It's easy to use and the new seat post slid in easily as well. It is a bit on the expensive side in terms of lubricants but the peace of mind is worth it when you invest a lot in your bike parts and want them to last. The size is also great for storing in a bike pouch along with some other small bike tools. I only applied this a month ago so I cannot speak for long-term efficacy. Thus, the four star rating for now. If it still holds up after some time, I will up the rating to 5.
    3 people found this helpful
    Helpful
     Report
  • Marshall David WahlstromHelgren
    5.0 out of 5 stars Awesome Bottom Bracket and grease Compound for threads on the Market!
    Reviewed in the United States on July 25, 2017
    Verified Purchase
    Awesome Compound, it really does work. I will say it's a lot for the price but since it's made in America you get what you pay for. It will last me a long time, as long as you use it in small amounts, it wasn’t just perfect for my bottom bracket, but Threaded surfaces like limit screws, axles, cone nuts, axle nuts, threaded spacers, etc. I've used this on Limit screws, my Bottom Bracket, any place with a machined threaded surface, hole etc. In fact on my bottom bracket shell of my frame was threaded, I did put ASC-1 grease on the threads inside the shell before installing the Bottom Bracket. The biggest problem I have had is the stripping of the threads, which is my biggest problem, so I started using it on screws on my derailleurs including my freewheel, and anything and everything with a threaded surface going into metal parts. This stuff really is awesome, and Park Tool is a brand and company I trust completely they really do know what they're doing. My only Recommendation to Park Tool is to put this in a tub like they have with PPL-1. Otherwise if you go through a lot of this you have to be prepared to spend a lot. Otherwise, I highly recommend it!
    Customer image
    Marshall David WahlstromHelgren
    5.0 out of 5 stars
    Awesome Bottom Bracket and grease Compound for threads on the Market!

    Reviewed in the United States on July 25, 2017
    Awesome Compound, it really does work. I will say it's a lot for the price but since it's made in America you get what you pay for. It will last me a long time, as long as you use it in small amounts, it wasn’t just perfect for my bottom bracket, but Threaded surfaces like limit screws, axles, cone nuts, axle nuts, threaded spacers, etc. I've used this on Limit screws, my Bottom Bracket, any place with a machined threaded surface, hole etc. In fact on my bottom bracket shell of my frame was threaded, I did put ASC-1 grease on the threads inside the shell before installing the Bottom Bracket. The biggest problem I have had is the stripping of the threads, which is my biggest problem, so I started using it on screws on my derailleurs including my freewheel, and anything and everything with a threaded surface going into metal parts. This stuff really is awesome, and Park Tool is a brand and company I trust completely they really do know what they're doing. My only Recommendation to Park Tool is to put this in a tub like they have with PPL-1. Otherwise if you go through a lot of this you have to be prepared to spend a lot. Otherwise, I highly recommend it!
    Images in this review
    Customer image
    18 people found this helpful
    Helpful
     Report
  • Steven Horwitz
    5.0 out of 5 stars Never had a problem
    Reviewed in the United States on July 31, 2024
    Verified Purchase
    I use this for titanium to aluminum or steel. Works great. After I had to drill out a titanium bolt, I never forget use a slight dab.
    3 people found this helpful
    Helpful
     Report
  • JT
    5.0 out of 5 stars Pipe~Thread Dope on a Rope!
    Reviewed in the United States on September 26, 2024
    Verified Purchase
    I'm pleased with alittle dab goes a along way on metal threads.
    It does it's job in preventing seize up when one needs to do maintenance on their bicycle. 🚲
    I recommend having this product in your repair bag. 👍🏻
    One person found this helpful
    Helpful
     Report

Top reviews from other countries

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  • Pilton
    5.0 out of 5 stars It works
    Reviewed in the United Kingdom on December 22, 2022
    Verified Purchase
    As far as anti seize goes....it works. Not much else to say except that if you are a home (bike) fettler, there is enough in the tube to keep you going for a long, long time.
    Report
  • Alberto R.
    5.0 out of 5 stars Ottimo
    Reviewed in Italy on January 30, 2021
    Verified Purchase
    Prodotto conforme alle aspettative
    Report
  • Jose Antonio
    5.0 out of 5 stars Grasa de Montaje NO lubricante
    Reviewed in Spain on August 29, 2017
    Verified Purchase
    Perfecta para el montaje de bicicletas, elimina crujidos, previene oxidaciones... lo normal de cualquier grasa de montaje. tiene una textura agradable y es comoda para aplicar incluso con la mano.
    Report
  • Bernard ong
    5.0 out of 5 stars Good quality n quantity
    Reviewed in Singapore on September 25, 2023
    Verified Purchase
    Good compound.
    Customer image
    Bernard ong
    5.0 out of 5 stars
    Good quality n quantity

    Reviewed in Singapore on September 25, 2023
    Good compound.
    Images in this review
    Customer image
    Report
  • Ralf H.
    5.0 out of 5 stars Fahrrad Montagefett
    Reviewed in Germany on February 27, 2020
    Verified Purchase
    Schneller Versand.
    Super zu dosieren.
    Benutze ich bei der Wartung meiner Fahrräder. Für den angegebenen Verwendungszweck top.
    Gerne wieder.
    Report