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MARUNI PATCH "R" 25mm for tubes 10 pcs
Universal inner tube repair patches, developed by the renowned Japanese company MARUNI. A high-quality product that will work for a variety of inner tubes, from bicycle to OTR.
Product features:
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wide range of sizes in round shape,
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bonding layer and reinforcing layer are bonded and do not separate,
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possibility to overlap patches during repair,
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packaged in a drawstring bag.
Instructions for Use:
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Trim the edges of the damage to prevent further tearing.
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Trace the size of the patch, roughen the surface, and apply vulcanizing cement.
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Wait 3–5 minutes for the vulcanizing cement to cure (oxidize), then apply the patch.
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Use a roller to firmly press the patch onto the inner tube.
Related products for a more effective repair:
Vulcanizing Cement for Tube Repair MARUNI VALKARN CFC-FREE
How to Properly Repair an Inner Tube Using MARUNI Vulcanizing Materials
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Mark the damaged area
Use chalk or a marker to clearly mark the damaged spot on the tube.
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Reinforce the tear
If the damage is a cut, reinforce the ends by eyeletting to prevent further tearing.
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Clean the area
Use Maruni Liquid Buffer to remove grease and dirt around the damage. Wipe it clean with a cloth.
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Trace the patch outline
Place the patch over the damage and draw an outline slightly larger than the patch itself.
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Roughen the surface
Mechanically roughen the marked area using a grinding tool or scraper to ensure proper bonding.
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Remove dust and debris
Use a pneumatic vacuum or blower to completely remove all dust and rubber particles.
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Apply Vulcanizing Cement
Evenly apply Maruni VALKARN Vulcanizing Cement to the prepared area. Wait until it fully dries (3–5 minutes, depending on conditions).
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Prepare the patch
Peel off the aluminum backing from the patch. Avoid touching the active adhesive side.
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Apply the patch
Place the patch exactly on the treated area.
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Press the patch firmly
Use a roller to press the patch down from the center outward, pushing out any air bubbles.
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Remove the protective foil
Peel off the top protective layer. The repair is now complete.