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  • Park Tool ASC-1 Anti-Seize Compound
  • Park Tool ASC-1 Anti-Seize Compound Detail
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Park ToolASC-1 Anti-Seize Compound

Item # PAR0193

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  • One Color, 4oz ($8.95)
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Item # PAR0193

Anti-Seize is a magical substance best known in bicycle applications for preventing titanium from cold-welding into aluminum or other materials. "Cold-welding"? That's when a titanium part basically fuses into an adjacent alloy part. When this happens, the two parts are impossible to separate from each other. When you consider how many high-end components are built with titanium bolts, this is a serious concern: If a titanium bolt cold-welds into an aluminum stem, there's no way in the world you'll be able to unthread the bolt.

Keep in mind that while frames and wheels and seatposts and bars all are being made from carbon fiber now, the hardware that holds these items together on your bike is very often made of titanium. In other words, Anti-Seize isn't just for people with Ti frames, but it's an important item for anyone who owns any componentry with Ti hardware. One 4oz. tube will last you a long, long time.

Tech Specs
Tech Specs
Recommended Use
bike maintenance
Manufacturer Warranty
limited lifetime

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Keep those parts seize-free

    Perfect for the parts on your bike that don't get touched much, pedals, seat clamps, etc. Doesn't take much to get the job done.


    • Familiarity: I've put it through the wringer

    This works great and is ideal for those parts that might not be seeing the light for a few years. A little goes a long way.

    Avg. ride time: 2h 5m per week
    • Average ride time is based on Strava activity over the last 3 months. Give your reviews credibility by connecting your account.

    I have a tube of this stuff which works

    • Familiarity: I've used it several times

    It should last a life time. Small amounts is all that is needed. Make sure to clean hands well afterwards. pretty toxic stuff but works great!

    Use this on anything Threaded

      Park Tool Anti Seize Compound is great for any threaded parts. This has been extremely useful for my bottom bracket, stem bolts, and Pedals. They say it works great for pressed headsets as well but haven't had the chance to use it on these. It makes things go together easy and more importantly allows them to come apart easily as well.