Park Tool ASC-1 Anti-Seize Compound

I’ve been using it in bottom brackets and haven’t had any issues! Park tool makes great stuff!

If you work on carbon fiber bikes this is a must have for any components you hang on the frame. Park is the only brand I trust.

Good stuff, did its job

The actual grease is pretty good but there are some problems I’ve had. First, this may sound like a first world problem, but you have to cut the end off which can be a pain. I ended up drilling out the end because I was having so many problems. Then, the second thing, was that the actual tube is not filled up all the way. There is a good amount of air inside the tube just like a bag of chips. You are expecting more then what your actually getting. Overall 3 stars for the problems but the actual paste is pretty good. Works great for what it’s meant for.

Good for preventing welding of seat posts, bottom bracket cups or any other metal-to-metal installations.

It works great. Pretty nasty stuff so use just a little or you will be cleaning extra grease for a while.

Works great.

Just what I expected. I like it and it works for me.

Have you ever seen a weight weenie who likes 21 pound full suspension mountain bikes or 11 pound road bikes, install titanium bolts into an aluminum or carbon fiber frame to save 30 grams on the overall weight of the bike? Or even worse, install a titanium bolt into a titanium frame ? (not recommended even with anti-seize compound) I have, and unfortunately I have also seen the damage done when someone tries to forcefully extract the same seized titanium nut or bolt a year later, which then has to be drilled out or in some cases can even ruin the frame. That is where anti-seize compound comes in. And Park Tools formulation is just as good if not better than any generic compound you buy at an auto store. I have no idea what the exact elements are in this Park Tools lube but I would not be surprised if it was partially Moly-50 with some zinc added for best protection with aluminum and titanium. (which also would work equally well with carbon fiber). At any rate, this lube works well. Very nice to have for bottom brackets on my titanium hardtail and for bolt hardware. I have been using this lube for multiple rebuilds over the last 15 years roughly and this has saved my butt from galled, corroded and seized components on more than one occasion. In my book, that makes it five stars!

You apply this on joints and threads that are not meant to move against each other, so that you can take them apart in the future. If youre like me, and was clueless about whats the difference between anti seize compound and polylube, watch the video by Park Tools showing the difference. If youre packing ball bearings, use polylube, not anti seize compound. However, you can use polylube to grease threads. So why get anti seize? They are supposed to last longer, and also prevent galvanic corrosion between dissimilar materials. May not matter much with bicycles, especially for parts that get removed and grease reapplied regularly. But I had a tough time removing my old pedals, and decided to get this as it doesnt cost much and I expect to need it somewhat frequently.