How to Replace Your AeroPress Plunger Seal for Better Performance

Quick Answer

If your AeroPress plunger feels loose or leaks air during pressing, you likely need to replace the silicone seal. You can buy a new seal separately or get a complete plunger assembly.

How to Replace the AeroPress Plunger Seal

1. Step 1: Remove the old seal: Hold the plunger rod with the seal facing up. Use your thumbs to push the seal off the end of the rod. It may be snug; work it off gently. If the seal is stuck, try running it under warm water to soften the silicone.
2. Step 2: Prepare the new seal: Take your new seal (or new plunger assembly). If you bought a separate seal, align it with the groove on the plunger rod. The flat side of the seal should face the rod's handle. Make sure the seal is oriented correctly. Installing it backwards will cause a poor fit.
3. Step 3: Install the new seal: Push the seal onto the rod until it snaps into the groove. Work it evenly around the circumference to ensure it's fully seated. Check that the seal sits flush and doesn't wobble. A properly installed seal will feel snug and rotate slightly.
4. Step 4: Test the seal: Insert the plunger into your AeroPress chamber. It should move smoothly with slight resistance. Press down to check for air leaks. If you feel air escaping or the plunger is too loose, the seal may not be fully seated. Remove and reinstall.

Replacement Parts

• AeroPress Original Plunger including seal: The AeroPress Original Plunger including seal is a replacement part for the Original model. It includes the plunger rod and a food-grade LFGB-grade silicone seal. If your existing plunger rod is fine, you can save money by buying just the seal. This product is the full plunger assembly, so you get a new rod and seal together.

  

• AeroPress Premium Plunger Including Seal: The AeroPress Premium Plunger Including Seal is available in Silver, Black, or White. It comes as a single unit with the seal already attached. Choose this if you want a color-matched or upgraded plunger. It's a premium option that includes both the plunger and seal in one package.