Park Tool 壓入式固定劑 (RC-1)

Been using this on some loose-fitting sealed bearings I thought I'd have to replace entirely. The compound dries clear and fills gaps nicely, and after 24 hours everything feels rock solid again with zero play.

Had a stubborn bottom bracket cup that kept spinning no matter how much torque I used. Applied this compound and let it sit for a day—now it's solid as a rock with zero play. The fact that it expands to fill gaps really does the trick.

Hunting down creaks in my press-fit bottom bracket was driving me crazy until I used this compound. It dries to a firm grip that seals out moisture, and the application is straightforward with the included brush. My ride is completely silent now.