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Maruni Plug Patch is a combination of a plug and a patch, offering a convenient and safe solution for repairing both bias-ply and radial tires.
The plug fills the injury channel, protecting the steel belts from corrosion. With the use of the Plug Patch, the repair is complete and ensures long-lasting performance.
Please note: Plug Patches should only be used for tread punctures at an angle of no more than 20 degrees. For punctures with a greater angle, a STEM plug should be used instead.
Maruni Plug Patches are available in the following sizes:
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4.5 mm plug with 35 mm patch
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7 mm plug with 40 mm patch
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9 mm plug with 56 mm patch
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12 mm plug with 80 mm patch
How to Properly Repair a Tire Using a Maruni Plug Patch
1. Use pliers to remove the foreign object from the tire, then mark the injury location with chalk.
2. Ream the injury several times with a carbide cutter from the outside of the tire.
3. Ream the injury again from the inside of the tire.
4. Position the Plug Patch so the injury is centered under the head, then trace an outline slightly larger than the patch.
5. Apply Liquid Buffer to the marked area to remove grease and dirt from the bonding surface.
6. Use a scraper to clean the area thoroughly.
7. Mechanically buff the marked area using a low-speed grinder.
8. Use a pneumatic vacuum to remove all rubber dust and debris.
9. Evenly and thoroughly apply Super Valkarn vulcanizing cement to the prepared area and allow it to dry completely.
10. Apply a few drops of Super Valkarn into the injury channel.
11. Coat the black portion of the Plug Patch stem with Super Valkarn cement.
12. Loosen the tire spreader. Insert the plug wire into the injury channel from the inside of the tire. Do not touch the bonding surface of the patch.
13. Use pliers to pull the plug stem through the hole.
14. Press the patch head firmly against