Goop puncture tyre sealant 250ml

Goop tyre sealant 250ml. Goop is a permanently installed in the tyre or tube before any puncture occurs. As the wheel rotates Goop is evenly distributed around the inside of the tyre or tube ready to seal punctures as they occur. When a puncture does occur the escaping air presure forces Goop into the hole immediately forming a strong airtight seal. Goop will seal punctures up to a quarter inch diameter and can seal air loss from the wheel rim.