Replace a Gasket on a Basic Steel Plain or Bamboo Cap

Quick answer

Replace the gasket on a Laken Basic Steel Plain or Bamboo cap by removing the old one, cleaning the groove, and pressing in a new Laken replacement gasket. This fixes leaks and restores the seal.

Step-by-step gasket replacement

1. Remove the old gasket: Using your fingernail or a blunt tool like a toothpick, gently pry the old gasket out of the groove inside the cap. Work around the entire circumference to avoid tearing it into pieces. If the old gasket is stuck, soak the cap in warm soapy water for a few minutes to loosen it.
2. Clean the groove: Wipe the groove with a damp cloth to remove any residue, dirt, or mineral deposits. Let it dry completely before installing the new gasket. Even tiny particles left in the groove can prevent the new gasket from seating evenly, causing a leak.
3. Install the new gasket: Place one side of the new Laken replacement gasket into the groove, then press the rest into place with your fingers. Run your thumb around the inside to ensure it sits flat and fully seated. Check that the gasket is not twisted or bunched up. If it looks uneven, remove and reseat it.
4. Test the seal: Screw the cap onto your bottle, fill it with water, and turn it upside down over a sink. If there are no drips, the replacement is successful. If it leaks, remove the cap and verify the gasket is fully seated in the groove. A slight misalignment is the most common cause.

What you need

• Junta para Tapón Basic Steel Plain™ y Bamboo™: Compatible with PLAIN caps in polypropylene or steel, and with BAMBOO caps. Type: replacement gasket for bottle caps. Using the correct replacement gasket ensures a proper fit and seal. This part is designed specifically for these cap types, so it avoids leaks that generic gaskets might cause.