Most other tyre sealant products contain hazardous materials. These range from asbestos, acids, organic fibers, and flammable liquids, to plainly toxic materials. Labeling on most of these products clearly indicates these hazards. Consequently these products have a poor reputation in the marketplace due to their unfortunate side effects, including:


• They are for the most part flammable.
• They cause environmental problems when disposed of before and after use.
• Many cause oxidization inside the tyres, and rust the wheels.
• They solidify due to centrifugal forces and torque, since the fibers they contain twist and contort into a solid mass of product which then revolves around inside the tyre.
• They contain versions of anti-freeze compounds, which are both flammable and toxic.
• The fibers used are very often plastics of one kind or another, and these again bind and ball up when subjected to centrifugal force and torque under acceleration.
• They invariably cause wheel imbalance.
• Many freeze, over liquefy, or dry out completely, depending on temperature variations.
• They fail to seal holes over 5/6 mm
• They fail at random and are not permanent.
• Tyre manufacturers void warranty if some of them are used.

These failings have become common knowledge in the automobile industry and in large commercial operations in general. Not surprisingly, the general belief is that sealants do not work.

Comparison of Tyresafe with other puncture sealants
  Tyresafe Oko Slime Tyreseal Tyreweld Flatfree Ultraseal Stop
UK Design Council “Millennium Award”
YES
NO
NO
NO
NO
NO
NO
NO
Manufactured by ISO 9002 Accredited Company
YES
YES
NO
NO
NO
NO
NO
NO
NATO Classified
YES
NO
NO
NO
NO
NO
NO
NO
Military Approved
YES
NO
NO
NO
NO
NO
NO
NO
Used by Special Forces Worldwide
YES
NO
NO
NO
NO
NO
NO
NO
Tested by UK Police Departments
YES
NO
NO
NO
NO
NO
NO
NO
Tested by RAPRA for Speed
(up to 240 km/h)
YES
NO
NO
NO
NO
NO
NO
NO
Tested by RAPRA for Longevity
(up to 40,000 km)
YES
NO
NO
NO
NO
NO
NO
NO
Tested by RAPRA for conformity to BS159F for Vulcanised Repairs
YES
NO
NO
NO
NO
NO
NO
NO
Contains Fibers Which Can Ball Up and Dry Up
NO
YES
YES
YES
N/A
YES
YES
YES
Latex Based
NO
NO
NO
NO
YES
NO
NO
NO
Permanent Repair
YES
NO
NO
NO
NO
NO
NO
NO
Tested by UK Military Providing Blue Cover Report
YES
NO
NO
NO
NO
NO
NO
NO
Suitable for Fast Moving Vehicles
YES
NO
NO
NO
NO
YES
YES
NO