The product is made for cars. If a puncture occurs, spray a sealing rubber material and air into the valve of the wheel. Afterwards, roll the tires for awhile to distribute the rubber material in the wheel. The wheelchair can also be placed on blocks and run in place (photo 1). Another option is to take solid tires to avoid punctures, se photo below.
Conny has solid tires on the manual chair; he uses the tire repair kit on the Permobil for emergencies. He always brings it when he travels.
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User (tire repair kit)
This tip is from 2005