Tire Sealant General Information

General information

The types of sealant and dosages recommended by the Producer, according to usage and speed category, must be complied.

How do you establish the dosages of FKR sealant?

In order to establish the dosages of FKR you have to identify:

  • Tyre type and dimension inscribed through markings on the tyre sidewall;
  • Usage field, according to which there are two categories of dosages:
    • Usual dosages (the column ON ROAD-adjusted roads) for vehicles that operate in normal conditions.
    • Severe conditions dosages (the column OFF-ROAD -non-adjusted roads or exposure to multiple punctures/extreme conditions)  for vehicles that operate in extreme conditions .

The following situations may occur:

No. Usage  field Recommended
Dosage
Column of Dosage Table
1 Predominant ON ROAD Usual dosage ON ROAD
2 ON ROAD /OFF-ROAD
Moderate frequency of flats
Usual dosage ON ROAD
3 ON ROAD /OFF-ROAD
High frequency of flats
Severe conditions dosage OFF-ROAD
4 Predominant OFF-ROAD Severe conditions dosage OFF-ROAD

Why is it necessary to comply with recommended FKR dosage?

FKR , by its rheoloyical character, diminishes its viscosity as centrifugal speed and temperature increase (implicitly the vehicle speed). In static conditions and at normal temperature, FKR returns to its initial viscosity. ( This is why when you dismantle a tyre equipped with FKR sealant, you  will not find, under static conditions the forming of a uniform film; this formes only by running the tyre).

If the recommended dosage and speed category are not complied with, the following situations may arise:

  • When the vehicle belongs to low speed category (<50 km/h) and a type of sealant specified for tyres of a high speed vehicle (>50 km/h or >80 km/h) is incorrectly used, using recommended dosages for the latter (ex.FKR 03 instead of FKR 04 or FKR 02 instead of FKR 03), the sealant, through tyre rotation while driving, shall not acquire the necessary fluidity in order to be uniformly distributed inside the tyre surface or it shall solve a  fewer number of flats than the one estimated.
  • When the vehicle belongs to high speed category (>80 km/h or >50 km/h) and a type of sealant designet for tyres of a vehicle that belongs to a lower speed category (<50 km/h) is chosen incorrectly, (example FKR 03 instead of FKR O2 or FKR 04 instead of FKR 03), then vibrations at high speed may be perceived.